Dallas-Fort Worth to Denver (DFW–DEN) — Airlines, Schedules & Connections

DFW Airport Page →
641 mi airlines 321/wk
On-time Some delays Frequent delays
Flight Schedule 107 flights Verified 1h ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight
  Flight Airline AC Dep Arr Dur OTP Sched  
AA662
AA American
321
12:17 AM
MDT TD
1:22 AM
MDT
1h 5m
M T W T F S S
Prices
UA773
UA United
319
5:30 AM
MDT TE
6:43 AM
MDT
2h 13m
M T W T F S S
Prices
F92147
F9 Frontier
321
6:00 AM
MDT TE
7:13 AM
MDT
2h 13m
M T W T F S S
Prices
GF6593
GF Gulf
738
7:05 AM
MDT TD
8:20 AM
MDT
2h 15m
M T W T F S S
Prices
AA1523
AA American
7M8
7:05 AM
MDT
8:20 AM
MDT
2h 15m
M T W T F S S
Prices
AC5307
AC Air Canada
320
7:10 AM
MDT TE
8:34 AM
MDT
2h 24m
M T W T F S S
Prices
UA644
UA United
738
7:15 AM
MDT TE
8:35 AM
MDT
2h 20m
M T W T F S S
Prices
IB4422
IB Iberia
321
8:20 AM
MDT TA
9:35 AM
MDT
2h 15m
M T W T F S S
Prices
AA2357
AA American
321
8:20 AM
MDT TA
9:35 AM
MDT
2h 15m
M T W T F S S
Prices
G36025
G3 GOL
738
8:26 AM
MDT
9:37 AM
MDT
2h 11m
M T W T F S S
Prices
AA2359
AA American
738
8:26 AM
MDT
9:37 AM
MDT
2h 11m
M T W T F S S
Prices
UA2167
UA United
738
9:06 AM
MDT TE
10:30 AM
MDT
2h 24m
M T W T F S S
Prices
G36151
G3 GOL
321
10:20 AM
MDT TA
11:36 AM
MDT
2h 16m
M T W T F S S
Prices
AA2579
AA American
321
10:20 AM
MDT TC
11:36 AM
MDT
2h 16m
M T W T F S S
Prices
F92549
F9 Frontier
32N
11:06 AM
MDT TE
12:20 PM
MDT
2h 14m
M T W T F S S
Prices
AA935
AA American
321
11:10 AM
MDT
12:19 PM
MDT
2h 9m
M T W T F S S
Prices
G36154
G3 GOL
321
11:10 AM
MDT
12:19 PM
MDT
2h 9m
M T W T F S S
Prices
UA2049
UA United
319
12:23 PM
MDT TE
1:30 PM
MDT
1h 7m
M T W T F S S
Prices
G36182
G3 GOL
321
12:47 PM
MDT TA
1:57 PM
MDT
2h 10m
M T W T F S S
Prices
AA420
AA American
321
12:47 PM
MDT TA
1:57 PM
MDT
2h 10m
M T W T F S S
Prices
BA1951
BA British
321
12:47 PM
MDT TB
1:57 PM
MDT
2h 10m
M T W T F S S
Prices
UA248
UA United
319
1:41 PM
MDT TE
2:55 PM
MDT
2h 14m
M T W T F S S
Prices
AV2021
AV avianca
738
1:43 PM
MDT TE
2:55 PM
MDT
2h 12m
M T W T F S S
Prices
AC4044
AC Air Canada
738
1:43 PM
MDT TE
2:55 PM
MDT
2h 12m
M T W T F S S
Prices
F92631
F9 Frontier
321
2:33 PM
MDT TE
3:49 PM
MDT
2h 16m
M T W T F S S
Prices
BA1953
BA British
321
2:44 PM
MDT TC
3:54 PM
MDT
2h 10m
M T W T F S S
Prices
F94463
F9 Frontier
32N
3:15 PM
MDT TE
4:37 PM
MDT
2h 22m
M T W T F S S
Prices
AA1832
AA American
738
3:16 PM
MDT TC
4:17 PM
MDT
1h 1m
M T W T F S S
Prices
GF4178
GF Gulf
738
4:37 PM
MDT TC
5:50 PM
MDT
2h 13m
M T W T F S S
Prices
BA1949
BA British
738
4:37 PM
MDT TA
5:50 PM
MDT
2h 13m
M T W T F S S
Prices
BA1948
BA British
738
4:37 PM
MDT
5:50 PM
MDT
2h 13m
M T W T F S S
Prices
UA2655
UA United
739
4:55 PM
MDT TE
6:08 PM
MDT
2h 13m
M T W T F S S
Prices
AA1322
AA American
738
5:09 PM
MDT TC
6:10 PM
MDT
1h 1m
M T W T F S S
Prices
UA1602
UA United
320
6:15 PM
MDT TE
7:33 PM
MDT
2h 18m
M T W T F S S
Prices
AA2235
AA American
321
6:44 PM
MDT
7:55 PM
MDT
2h 11m
M T W T F S S
Prices
IB4106
IB Iberia
321
6:44 PM
MDT
7:55 PM
MDT
2h 11m
M T W T F S S
Prices
BA1950
BA British
321
6:55 PM
MDT TC
8:05 PM
MDT
2h 10m
M T W T F S S
Prices
IB4537
IB Iberia
321
6:55 PM
MDT
8:05 PM
MDT
2h 10m
M T W T F S S
Prices
IB4631
IB Iberia
321
6:55 PM
MDT
8:05 PM
MDT
2h 10m
M T W T F S S
Prices
AY4161
AY Finnair
321
6:55 PM
MDT TC
8:05 PM
MDT
2h 10m
M T W T F S S
Prices
GF4315
GF Gulf
321
7:17 PM
MDT TD
8:31 PM
MDT
2h 14m
M T W T F S S
Prices
FJ5021
FJ Fiji
321
7:17 PM
MDT TD
8:31 PM
MDT
2h 14m
M T W T F S S
Prices
UA5195
UA United
8:12 PM
MDT
9:23 PM
MDT
1h 11m
M T W T F S S
Prices
AA2328
AA American
321
8:49 PM
MDT TD
9:52 PM
MDT
1h 3m
M T W T F S S
Prices
IB4800
IB Iberia
321
9:26 PM
MDT TD
10:40 PM
MDT
2h 14m
M T W T F S S
Prices
CX7643
CX Cathay Pacific
321
9:26 PM
MDT TA
10:40 PM
MDT
2h 14m
M T W T F S S
Prices
AA577
AA American
321
9:26 PM
MDT TD
10:40 PM
MDT
2h 14m
M T W T F S S
Prices
BA4363
BA British
321
9:26 PM
MDT TC
10:40 PM
MDT
2h 14m
M T W T F S S
Prices
BA1952
BA British
321
10:42 PM
MDT TD
11:54 PM+1
MDT
2h 12m
M T W T F S S
Prices
AA1406
AA American
321
5:00 AM
MDT
8:07 AM
MDT
2h 7m
M T W T F S S
Prices
AA2612
AA American
321
5:30 AM
MDT
8:35 AM
MDT
2h 5m
M T W T F S S
Prices
BA6560
BA British
321
6:00 AM
MDT
9:12 AM
MDT
2h 12m
M T W T F S S
Prices
BA1789
BA British
321
6:00 AM
MDT
9:12 AM
MDT
2h 12m
M T W T F S S
Prices
AA2078
AA American
321
6:25 AM
MDT
9:30 AM
MDT
2h 5m
M T W T F S S
Prices
AA3285
AA American
321
6:50 AM
MDT
10:19 AM
MDT
3h 29m
M T W T F S S
Prices
UA2160
UA United
319
7:50 AM
MDT
10:54 AM
MDT
2h 4m
M T W T F S S
Prices
F92550
F9 Frontier
A20N
8:00 AM
MDT
11:10 AM
MDT
2h 10m
M T W T F S S
Prices
AV2020
AV avianca
319
8:00 AM
MDT
11:04 AM
MDT
2h 4m
M T W T F S S
Prices
AA852
AA American
321
8:00 AM
MDT
11:10 AM
MDT
2h 10m
M T W T F S S
Prices
F93396
F9 Frontier
A20N
8:00 AM
MDT
11:10 AM
MDT
2h 10m
M T W T F S S
Prices
BA5624
BA British
321
8:00 AM
MDT
11:10 AM
MDT
2h 10m
M T W T F S S
Prices
AC4043
AC Air Canada
319
8:00 AM
MDT
11:04 AM
MDT
2h 4m
M T W T F S S
Prices
F91324
F9 Frontier
321
8:17 AM
MDT
11:27 AM
MDT
2h 10m
M T W T F S S
Prices
AA1523
AA American
B38M
9:10 AM
MDT
12:12 PM
MDT
2h 2m
M T W T F S S
Prices
BA1913
BA British
738
9:18 AM
MDT
12:21 PM
MDT
2h 3m
M T W T F S S
Prices
BA1877
BA British
321
10:20 AM
MDT
1:25 PM
MDT
2h 5m
M T W T F S S
Prices
F94464
F9 Frontier
A21N
10:24 AM
MDT
1:11 PM
MDT
2h 47m
M T W T F S S
Prices
GF6574
GF Gulf
321
10:25 AM
MDT
1:30 PM
MDT
2h 5m
M T W T F S S
Prices
AA2357
AA American
321
10:25 AM
MDT
1:30 PM
MDT
2h 5m
M T W T F S S
Prices
IB4012
IB Iberia
321
10:25 AM
MDT
1:30 PM
MDT
2h 5m
M T W T F S S
Prices
QR8214
QR Qatar
738
10:28 AM
MDT
1:30 PM
MDT
2h 2m
M T W T F S S
Prices
AA2359
AA American
738
10:28 AM
MDT
1:30 PM
MDT
2h 2m
M T W T F S S
Prices
UA1350
UA United
319
10:37 AM
MDT
1:18 PM
MDT
2h 41m
M T W T F S S
Prices
BA1875
BA British
321
12:33 PM
MDT
3:36 PM
MDT
2h 3m
M T W T F S S
Prices
GF6621
GF Gulf
321
12:33 PM
MDT
3:36 PM
MDT
2h 3m
M T W T F S S
Prices
AY4240
AY Finnair
321
12:33 PM
MDT
3:36 PM
MDT
2h 3m
M T W T F S S
Prices
IB4405
IB Iberia
321
12:33 PM
MDT
3:36 PM
MDT
2h 3m
M T W T F S S
Prices
G36151
G3 GOL
321
12:33 PM
MDT
3:36 PM
MDT
2h 3m
M T W T F S S
Prices
AA982
AA American
321
1:13 PM
MDT
4:17 PM
MDT
2h 4m
M T W T F S S
Prices
AC3371
AC Air Canada
739
1:45 PM
MDT
4:49 PM
MDT
2h 4m
M T W T F S S
Prices
UA578
UA United
319
1:45 PM
MDT
4:49 PM
MDT
2h 4m
M T W T F S S
Prices
UA5901
UA United
E7W
1:55 PM
MDT
5:14 PM
MDT
2h 19m
M T W T F S S
Prices
AA2579
AA American
321
2:01 PM
MDT
4:55 PM
MDT
2h 54m
M T W T F S S
Prices
F93366
F9 Frontier
A21N
2:19 PM
MDT
5:27 PM
MDT
2h 8m
M T W T F S S
Prices
IB4706
IB Iberia
321
2:48 PM
MDT
5:54 PM
MDT
2h 6m
M T W T F S S
Prices
GF6472
GF Gulf
321
2:48 PM
MDT
5:54 PM
MDT
2h 6m
M T W T F S S
Prices
G36182
G3 GOL
321
2:48 PM
MDT
5:54 PM
MDT
2h 6m
M T W T F S S
Prices
AA420
AA American
321
2:48 PM
MDT
5:54 PM
MDT
2h 6m
M T W T F S S
Prices
BA1878
BA British
321
2:49 PM
MDT
5:55 PM
MDT
2h 6m
M T W T F S S
Prices
UA414
UA United
738
3:35 PM
MDT
6:41 PM
MDT
2h 6m
M T W T F S S
Prices
UA1297
UA United
319
4:18 PM
MDT
7:18 PM
MDT
3h
M T W T F S S
Prices
IB4597
IB Iberia
738
4:43 PM
MDT
7:49 PM
MDT
2h 6m
M T W T F S S
Prices
AA1832
AA American
738
4:43 PM
MDT
7:49 PM
MDT
2h 6m
M T W T F S S
Prices
BA1876
BA British
321
4:44 PM
MDT
7:49 PM
MDT
2h 5m
M T W T F S S
Prices
GF4139
GF Gulf
321
4:44 PM
MDT
7:49 PM
MDT
2h 5m
M T W T F S S
Prices
F92148
F9 Frontier
A20N
5:20 PM
MDT
8:28 PM
MDT
2h 8m
M T W T F S S
Prices
UA2201
UA United
739
5:45 PM
MDT
8:51 PM
MDT
2h 6m
M T W T F S S
Prices
UA1565
UA United
738
6:10 PM
MDT
9:14 PM
MDT
2h 4m
M T W T F S S
Prices
AC3093
AC Air Canada
738
6:10 PM
MDT
9:14 PM
MDT
2h 4m
M T W T F S S
Prices
CX7640
CX Cathay Pacific
738
6:40 PM
MDT
9:44 PM
MDT
2h 4m
M T W T F S S
Prices
AA1322
AA American
738
6:40 PM
MDT
9:44 PM
MDT
2h 4m
M T W T F S S
Prices
BA1873
BA British
738
6:40 PM
MDT
9:44 PM
MDT
2h 4m
M T W T F S S
Prices
FJ5027
FJ Fiji
738
6:40 PM
MDT
9:44 PM
MDT
2h 4m
M T W T F S S
Prices
UA2239
UA United
319
6:52 PM
MDT
9:59 PM
MDT
2h 7m
M T W T F S S
Prices
UA8179
UA United
7:59 PM
MDT
10:20 PM
MDT
2h 21m
M T W T F S S
Prices
UA2108
UA United
319
8:43 PM
MDT
11:44 PM
MDT
2h 1m
M T W T F S S
Prices
F92632
F9 Frontier
A21N
11:28 PM
MDT
2:18 AM+1
MDT
2h 50m
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

1-STOP
2-STOP Loading...
Dallas-Fort Worth to Denver
13 carriers, 321 flights/week nonstop.
13 Airlines 321 Flights/wk 641 mi 1h 1m nonstop 171 1-stop hubs

DFW–DEN is served by 13 airlines with nonstop service. American Airlines, United Airlines and British Airways lead the route. The flight covers 641 miles in approximately 1h 1m. Beyond nonstop, 171 hubs offer 1-stop connections.

Airline Landscape

All carriers operating nonstop DFW–DEN service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
AA American Airlines 84 321, 738, 7M8 1h01-2h16 62% Oneworld
UA United Airlines 49 319, 320, 738, 739 1h07-2h24 62% Star Alliance
BA British Airways 43 321, 738 2h10-2h14 62% Oneworld
IB Iberia 30 321 2h10-2h15 62% Oneworld
F9 Frontier 28 321, 32N 2h13-2h22 62%
G3 GOL 28 321, 738 2h09-2h16 62%
GF Gulf Air 21 321, 738 2h13-2h15 62%
AC Air Canada 14 320, 738 2h12-2h24 62% Star Alliance
AV avianca 7 738 2h12 62% Star Alliance
AY Finnair 7 321 2h10 62% Oneworld
CX Cathay Pacific 7 321 2h14 62% Oneworld
FJ Fiji Airways 3 321 2h14 62% Oneworld
KG Key Lime Air 1 62%
Aircraft on this route
319 Airbus A319 – UA
320 Airbus A320 – AC, UA
321 Airbus A321 – AA, AY, BA, CX, F9, FJ, G3, GF, IB
32N Airbus A320neo – F9
738 Boeing 737-800 – AA, AC, AV, BA, G3, GF, UA
739 Boeing 737-900 – UA
7M8 Boeing 737 MAX 8 – AA
Alliance coverage
Oneworld: AA + AY + BA + CX + FJ + IB (174 flights/wk, 54%)
Unaffiliated: F9 + G3 + GF + KG (78 flights/wk, 24%)
Star Alliance: AC + AV + UA (70 flights/wk, 22%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.

Weekly Schedule Pattern

Nonstop flight frequency by day of week, DFW to DEN direction.
Mon
45
flights
Tue
48
flights
Wed
45
flights
Thu
46
flights
Fri
45
flights
Sat
47
flights
Sun
45
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
49
Nonstop flights
321
Outbound / wk
370
Return / wk

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for DFW to DEN.
1-STOP
One-Stop Connections
171
Hubs
~3h
Fastest
~35h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
6,044
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.

On-Time Performance

What to expect at each end of your journey.
Outbound
DFW → DEN
62%
Moderate delays possible. Allow buffer time.
Departing
62%
Arriving
90%
Return
DEN → DFW
69%
Moderate delays possible. Allow buffer time.
Departing
69%
Arriving
78%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. DFW delays → DEN delays →

Other ways to reach Denver from Dallas-Fort Worth

Nearby airports with service to Denver International Airport.
Metric DFW→DEN DAL→DEN ABI→DEN
Distance from DFW 12 mi 157 mi
Nonstop airlines 13 3 1
Weekly flights 321 121 14
Flight time 1h 1m 0h 47m 2h 3m
Departure OTP 62%
Airports within 200 miles of DFW with service to Denver International Airport.

Travel Essentials

Practical planning for this route.
Time Difference
0h
Denver is 0 hours the same as Dallas-Fort Worth.
DFW: MDT · DEN: MDT

When it's 6:00 PM in Dallas-Fort Worth, it's 6:00 PM in Denver.
Distance & Flight Time
641 mi / 1,032 km
Nonstop flight time is approximately 1h 1m to 2h 24m.
Getting to DFW

DART Orange Line runs from downtown Dallas to Terminal A (50 min, $3). TEXRail serves Terminal B from Fort Worth ($2.50). No direct rail connects both cities to DFW; choose based on your origin. Ride-shares cost $25–45 from either city center.DFW's five terminals span 17,000 acres. The free Skylink people mover connects all terminals airside.

Getting from DEN

RTD A Line runs to Denver Union Station (37 min, $10.50) with connections to light rail and bus routes. Taxis have meters; expect $55–65 to downtown.DEN's tent-roof Jeppesen Terminal is a single building; all three concourses connect via the underground automated train. Rental cars are on level 5. For ski resorts, shuttle services depart from Ground Transportation.

Denver Climate

Semi-arid with 300+ days of sunshine. Summers are dry and warm (27–34°C) with afternoon thunderstorms that produce dramatic but brief delays. Winters bring cold temperatures (−8 to 5°C) and heavy blizzards that can shut down ground operations.

Spring snowstorms can be heavier than midwinter ones. Altitude (5,430 ft) means low humidity year-round; stay hydrated.

DFW–DEN Quick Facts

Key statistics for the Dallas-Fort Worth to Denver route.
Route details
Distance641 mi / 1,032 km
Flight time1h 1m to 2h 24m
Time difference0 hours
Airlines (nonstop)13
Weekly flights321 out / 370 return
1-stop connections171 hubs
Origin: DFW
IATA / ICAODFW / KDFW
TimezoneAmerica/Denver
Passengers/yr87.8M
Elevation607 ft / 185 m
Destination: DEN
IATA / ICAODEN / KDEN
TimezoneAmerica/Denver
Passengers/yr82.4M
Elevation5,431 ft / 1,655 m

Frequently Asked Questions

Common questions about DFW to DEN flights.
Nonstop flights from Dallas Fort Worth International Airport to Denver International Airport take approximately 1h 1m to 2h 24m. The route covers 641 miles.
There are approximately 321 nonstop flights per week from DFW to DEN. The return direction has about 370 weekly flights.
Yes, 1-stop connections are available through IAB, PUB, RIL, SCF, SLN, CVN, RFD, PVU, BFI, APF, TEB, OAK, PAE, HPN, GNV, ILM, JAC, RTB, IDA, HRL, YUL, SJD, LIR, PVR, GUC, HDN, EGE, MDW, ABI, JFK, ATW, ANC, TUL, MAF, AMA, HOU, SYR, OKC, MCI, ICT, BFL, DRO, ABQ, IAH, STL, MEM, LBB, COS, ELP, AUS, DSM, MKE, LEX, SGU, MSO, OMA, GJT, MLI, SAT, SAF, ATL, LIT, PIT, SLC, MSP, ONT, MEX, TUS, SHV, ORD, XNA, BUF, ASE, ROW, MSY, PHX, LAS, MTY, FAT, BHM, SJC, RNO, BIS, SGF, RAP, COU, LAX, SNA, DAY, RDU, PIA, SFO, GEG, CUU, SAN, FSD, SDF, CMH, IND, TYS, MIA, SMF, BNA, CLT, PBI, PSP, MSN, ORF, TPA, BOI, FAR, GRR, DTW, KOA, RSW, SEA, PDX, CVG, BIL, CLE, FLL, AVL, OGG, BZN, MCO, MTJ, HNL, BDL, CUN, BWI, PHL, CRP, ECP, HSV, JAX, CID, PNS, DCA, EWR, YYC, GDL, BUR, SBN, CHS, LHR, BOS, GSP, IAD, LGA, SBA, BTR, FRA, SAV, YYZ, RIC, SBP, HND, MRY, GCM, YVR, NRT, SJO, SJU, SGR, SRQ, CZM, BZE, NAS, MBJ, PUJ and IST. These options provide additional schedule flexibility.
Yes, return flights from DEN to DFW are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include DAL and ABI. See the Alternatives section for a full comparison.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.
American Airlines, Frontier Airlines, Spirit Airlines, Southwest Airlines, and United Airlines all operate DFW-DEN nonstop. At DFW, American uses Terminals A through E depending on the gate; Spirit and Frontier use Terminal E. Southwest does not operate from DFW. Southwest Dallas flights use Dallas Love Field (DAL). United operates from Terminal E at DFW. Denver International has a single Jeppesen Terminal with concourses A, B, and C accessed by underground train.
Denver gets significant winter disruption from Rocky Mountain snowstorms, typically October through April. DEN can close individual runways but rarely shuts completely. Outbound delays from DEN during snowstorms run 30 minutes to two hours. Because DFW is a major hub, delayed DFW arrivals cascade into connecting bank disruptions. American publishes weather waivers during major Denver snowstorms that allow date changes without fees.
American runs the highest frequency at around 265 monthly flights from DFW and offers full-service options including first class and AAdvantage miles. Frontier is a bare-bones carrier where bags and seat selection cost extra. Frontier's base fares can undercut American significantly on this 641-mile route. United also flies the segment from its smaller DFW presence into its Denver hub.

Dallas Fort Worth to Denver: Hub-to-Hub with Five Carriers

DFW-DEN is a well-served 641-mile segment with 112 weekly nonstop departures from DFW alone, and additional service from Dallas Love Field on Southwest. Five carriers compete nonstop: American, Frontier, Spirit, Southwest (from DAL), and United. American accounts for the bulk of DFW departures with 265 monthly flights. Frontier and Spirit serve the price-sensitive segment out of Terminal E. Flight time is 2 hours 8 minutes. Denver International serves as United's second-largest hub and Frontier's hub, so both carriers funnel significant connecting traffic through DEN. Departures run from 05:15 to 22:50.

Denver Airport and Seasonal Patterns

Denver International sits 25 miles from downtown Denver on the High Plains at 1,655 metres elevation. The single Jeppesen Terminal serves all airlines, with concourses A, B, and C linked by an underground automated train. American uses primarily concourse A. Frontier and Spirit use concourse C. Winter weather October through April is the primary delay driver at DEN. Rocky Mountain snowstorms can reduce Denver to single-runway operations and create ground holds affecting DFW departures. Summer thunderstorms in July and August also generate convective delays at DFW that push back Denver departures.