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

DEN Airport Page →
1,356 mi airlines 22/wk
On-time Some delays Frequent delays
Flight Schedule 6 flights Verified 8h ago
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  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop
WN2957
WN Southwest
7S7
11:30 AM
MDT
4:35 PM
EDT
3h 5m
M T W T F S S
Prices
UA248
UA United
738
5:40 PM
MDT
10:58 PM
EDT
3h 18m
M T W T F S S
Prices
UA2464
UA United
738
5:48 PM
MDT
11:05 PM
EDT
3h 17m
M T W T F S S
Prices
UA762
UA United
7M9
5:53 PM
MDT
11:10 PM
EDT
3h 17m
M T W T F S S
Prices
UA1727
UA United
738
8:37 AM
EDT
10:20 AM
MDT
3h 43m
M T W T F S S
Prices
WN435
WN Southwest
7S7
3:25 PM
EDT
5:00 PM
MDT
3h 35m
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

1-STOP More options, longer trips
2-STOP Loading... Reach the hardest destinations
Denver to Buffalo
2 carriers, 22 flights/week nonstop.
2 Airlines 22 Flights/wk 1,356 mi 3h 5m nonstop +2h ahead 59 1-stop hubs

DEN–BUF is served by 2 airlines with nonstop service. United Airlines and Southwest Airlines lead the route. The flight covers 1,356 miles in approximately 3h 5m. Beyond nonstop, 59 hubs offer 1-stop connections.

Airline Landscape

All carriers operating nonstop DEN–BUF service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
UA United Airlines 21 738, 7M9 3h17-3h18 96% Star Alliance
WN Southwest Airlines 1 7S7 3h05 96%
Aircraft on this route
738 Boeing 737-800 – UA
7M9 Boeing 737 MAX 9 – UA
7S7 Boeing 737 MAX 7 – WN
Alliance coverage
Star Alliance: UA (21 flights/wk, 95%)
Unaffiliated: WN (1 flights/wk, 5%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.

Weekly Schedule Pattern

Nonstop flight frequency by day of week, DEN to BUF direction.
Mon
3
flights
Tue
3
flights
Wed
3
flights
Thu
3
flights
Fri
3
flights
Sat
4
flights
Sun
3
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
4
Nonstop flights
22
Outbound / wk
8
Return / wk

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for DEN to BUF.
1-STOP
One-Stop Connections
59
Hubs
~4h
Fastest
~26h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,175
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.

Other ways to reach Buffalo from Denver

Nearby airports with service to Buffalo Niagara International Airport.
Metric DEN→BUF EGE→BUF
Distance from DEN 120 mi
Nonstop airlines 2 2
Weekly flights 22 1
Flight time 3h 5m 3h 8m
Departure OTP 96%
Airports within 200 miles of DEN with service to Buffalo Niagara International Airport.

Travel Essentials

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

When it's 6:00 PM in Denver, it's 8:00 PM in Buffalo.
Distance & Flight Time
1,356 mi / 2,182 km
Nonstop flight time is approximately 3h 5m to 3h 18m.
Getting to DEN

RTD A Line commuter rail runs from Denver Union Station to the airport (37 min, $10.50). Trains depart every 15 minutes during peak hours. The airport is 25 miles northeast of downtown; ride-shares cost $35–55 and take 30–45 minutes depending on I-70 traffic.Economy parking in lots 4–6 connects via free shuttle. Mountain shuttle services depart from Jeppesen Terminal's Ground Transportation level.

DEN–BUF Quick Facts

Key statistics for the Denver to Buffalo route.
Route details
Distance1,356 mi / 2,182 km
Flight time3h 5m to 3h 18m
Time difference+2 hours
Airlines (nonstop)2
Weekly flights22 out / 8 return
1-stop connections59 hubs
Origin: DEN
IATA / ICAODEN / KDEN
TimezoneAmerica/Denver
Passengers/yr82.4M
Elevation5,431 ft / 1,655 m
Destination: BUF
IATA / ICAOBUF / KBUF
TimezoneAmerica/New_York
Passengers/yr5.0M
Elevation728 ft / 222 m

Frequently Asked Questions

Common questions about DEN to BUF flights.
Nonstop flights from Denver International Airport to Buffalo Niagara International Airport take approximately 3h 5m to 3h 18m. The route covers 1,356 miles.
2 airlines operate nonstop service: United Airlines and Southwest Airlines.
There are approximately 22 nonstop flights per week from DEN to BUF. The return direction has about 8 weekly flights.
Yes, 1-stop connections are available through DAL, PWK, MKE, YYZ, LEX, IND, CLE, PIT, HPN, TEB, EGE, FSD, BED, SUS, YUL, CHS, ALB, SCF, HOU, JAX, MSY, BCT, LVK, APF, SUA, HRL, BUR, PBI, SJC, LGB, MIA, PDX, SJU, DTW, DCA, LAX, EWR, LTN, JFK, IAD, ORD, BWI, MDW, PHL, CLT, TPA, DFW, MCO, BNA, LGA, ATL, PHX, BOS, LAS, RDU, RSW, SRQ, FLL and RIC. These options provide additional schedule flexibility.
Buffalo is 2 hours ahead of Denver.
Yes, return flights from BUF to DEN are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include EGE. 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 DEN to BUF

Denver International Airport (DEN) and Buffalo Niagara International Airport (BUF) are connected by nonstop service from United Airlines and Southwest Airlines. With 22 weekly departures, this is a well served route.

DEN to BUF Flight Duration and Schedule

Nonstop flight time from DEN to BUF ranges from 3 hours 5 minutes to 3 hours 18 minutes. The route covers a distance of 1,356 miles (2,182 km). There are approximately 22 weekly flights outbound and 8 return, totaling 30 flights per week in both directions.

Connecting Options and Alternatives

59 one-stop connections are available, with the fastest taking approximately 4 hours via DAL. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Eagle (EGE).