Buffalo to Denver (BUF–DEN) — Airlines, Schedules & Connections

BUF Airport Page →
1,356 mi airlines charter/private 17/wk
On-time Some delays Frequent delays
Flight Schedule 16 flights Verified 30m ago
Nonstop Charter / private 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop
WN1514
WN Southwest
7M8
5:05 AM
EDT
6:40 AM
MDT
3h 35m
M T W T F S S
Prices
WN3974
WN Southwest
B38M
5:15 AM
EDT
6:50 AM
MDT
3h 35m
M T W T F S S
Prices
UA1727
UA United
738
9:54 AM
EDT
11:16 AM
MDT
3h 22m
M T W T F S S
Prices
WN739
WN Southwest
73H
12:40 PM
EDT
2:10 PM
MDT
3h 30m
M T W T F S S
Prices
WN324
WN Southwest
7S7
4:20 PM
EDT
5:55 PM
MDT
3h 35m
M T W T F S S
Prices
WN3413
WN Southwest
738
4:40 PM
EDT
6:15 PM
MDT
3h 35m
M T W T F S S
Prices
WN450
WN Southwest
73H
5:21 PM
EDT
7:01 PM
MDT
3h 40m
M T W T F S S
Prices
WN2589
WN Southwest
73H
6:15 PM
EDT
7:39 PM
MDT
3h 24m
M T W T F S S
Prices
WN1083
WN Southwest
738
12:00 PM
MDT
5:05 PM
EDT
3h 5m
25%
M T W T F S S
Prices
WN958
WN Southwest
B38M
12:10 PM
MDT
5:15 PM
EDT
3h 5m
25%
M T W T F S S
Prices
WN117
WN Southwest
737
12:45 PM
MDT
5:45 PM
EDT
3h
25%
M T W T F S S
Prices
UA286
UA United
739
1:25 PM
MDT
6:38 PM
EDT
3h 13m
38%
M T W T F S S
Prices
WN2259
WN Southwest
7M8
1:25 PM
MDT
6:30 PM
EDT
3h 5m
25%
M T W T F S S
Prices
UA248
UA United
738
5:40 PM
MDT
10:58 PM
EDT
3h 18m
38%
M T W T F S S
Prices
WN1761
WN Southwest
7M8
8:11 PM
MDT
12:52 AM+1
EDT
2h 41m
25%
M T W T F S S
Prices
WN2708
WN Southwest
7M8
8:32 PM
MDT
1:22 AM+1
EDT
2h 50m
25%
M T W T F S S
Prices

No flights match your filters.

No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

✦ 1-Stop connections via 10 hubs
MDW Chicago 5h 5m WN UAWN Chicago (MDW) to Denver flights
DTW Detroit 5h 32m AFAMDL ACAFDL Detroit (DTW) to Denver flights
BNA Nashville 5h 34m WN F9UAWN Nashville (BNA) to Denver flights
MSP Minneapolis 5h 36m DLWS ACAFCM Minneapolis (MSP) to Denver flights
ORD Chicago 5h 40m AAACAS AAACAY Chicago (ORD) to Denver flights
DAL Dallas 5h 46m WN UAWN Dallas (DAL) to Denver flights
BWI Baltimore 5h 51m WN UAWN Baltimore (BWI) to Denver flights
IAD Dulles 6h 2m AVCMSN AVAZCM Dulles (IAD) to Denver flights
PHL Philadelphia 6h 28m AAASBA AAACBA Philadelphia (PHL) to Denver flights
LGA New York 6h 28m AADL DLUAWN New York (LGA) to Denver flights
1-STOP More options, longer trips
2-STOP Loading... Reach the hardest destinations
Buffalo to Denver
2 carriers, 17 flights/week nonstop.
2 Airlines 1,356 mi 3h 35m nonstop -2h behind

BUF–DEN is served by 2 airlines with nonstop service. Southwest Airlines and United Airlines lead the route. The flight covers 1,356 miles in approximately 3h 35m. Beyond nonstop, 1-stop connecting options are also available.

Airline Landscape

All carriers operating nonstop BUF–DEN service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 10 738, 73H, 7M8, 7S7, B38M 3h24-3h40 100%
UA United Airlines 7 738 3h22 100% Star Alliance
Aircraft on this route
738 Boeing 737-800 – UA, WN
73H Boeing 737-800 (Winglets) – WN
7M8 Boeing 737 MAX 8 – WN
7S7 Boeing 737 MAX 7 – WN
B38M Boeing 737 MAX 8 – WN
Alliance coverage
Unaffiliated: WN (10 flights/wk, 59%)
Star Alliance: UA (7 flights/wk, 41%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.

Weekly Schedule Pattern

Nonstop flight frequency by day of week, BUF to DEN direction.
Mon
2
flights
Tue
2
flights
Wed
2
flights
Thu
2
flights
Fri
2
flights
Sat
4
flights
Sun
3
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
8
Nonstop flights
17
Outbound / wk
17
Return / wk

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for BUF to DEN.
1-STOP
One-Stop Connections
42
Hubs
~5h
Fastest
~15h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,235
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
BUF → DEN
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
80%
Return
DEN → BUF
68%
Moderate delays possible. Allow buffer time.
Departing
68%
Arriving
84%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. BUF delays → DEN delays →

Other ways to reach Denver from Buffalo

Nearby airports with service to Denver International Airport.
Metric BUF→DEN YYZ→DEN
Distance from BUF 68 mi
Nonstop airlines 2 9
Weekly flights 17 46
Flight time 3h 35m 3h 45m
Departure OTP 100%
Airports within 200 miles of BUF with service to Denver International Airport.

Travel Essentials

Practical planning for this route.
Time Difference
-2h
Denver is 2 hours behind Buffalo.
BUF: EDT · DEN: MDT

When it's 6:00 PM in Buffalo, it's 4:00 PM in Denver.
Distance & Flight Time
1,356 mi / 2,182 km
Nonstop flight time is approximately 3h 35m gate to gate.
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.

BUF–DEN Quick Facts

Key statistics for the Buffalo to Denver route.
Route details
Distance1,356 mi / 2,182 km
Flight time3h 35m
Time difference-2 hours
Airlines (nonstop)2
Weekly flights17 out / 17 return
1-stop connectionsAvailable
Origin: BUF
IATA / ICAOBUF / KBUF
TimezoneAmerica/New_York
Passengers/yr5.0M
Elevation728 ft / 222 m
Destination: DEN
IATA / ICAODEN / KDEN
TimezoneAmerica/Denver
Passengers/yr82.4M
Elevation5,431 ft / 1,655 m

Frequently Asked Questions

Common questions about BUF to DEN flights.
Nonstop flights from Buffalo Niagara International Airport to Denver International Airport take about 3h 35m gate to gate. The route covers 1,356 miles.
2 airlines operate flights from BUF to DEN: Southwest Airlines and United Airlines.
This route has daily service. Check the schedule above for departure days and times in each direction.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Chicago Midway, Detroit Metropolitan Wayne County and Nashville.
Denver is 2 hours behind Buffalo.
Yes, return flights from DEN to BUF are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include YYZ. 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.

Flights from BUF to DEN

Buffalo Niagara International Airport (BUF) and Denver International Airport (DEN) are connected by nonstop service from Southwest Airlines and United Airlines. With 17 weekly departures, this is a well served route.

BUF to DEN Flight Duration and Schedule

Nonstop flight time from BUF to DEN is about 3 hours 35 minutes gate to gate. The route covers a distance of 1,356 miles (2,182 km). There are approximately 17 weekly flights outbound and 17 return, totaling 34 flights per week in both directions.

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Chicago Midway, Detroit Metropolitan Wayne County and Nashville. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Toronto (YYZ).