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Denver → Buffalo

Jan 21, 2027 · return Jan 28, 2027

DEN → BUF1 adulteconomyRound trip

9 flight options · 6 airlines

Nonstop flights

Thu, Jan 21 – Thu, Jan 28

Southwest Airlines
1:15 pmDEN
2h 55m
Nonstop
6:10 pmBUF
Southwest Airlines
4:55 pmBUF
3h 40m
Nonstop
6:35 pmDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

United Airlines
5:25 pmDEN
3h 8m
Nonstop
10:33 pmBUF
United Airlines
8:17 amBUF
3h 46m
Nonstop
10:03 amDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Southwest Airlines
11:50 amDEN
3h
Nonstop
4:50 pmBUF
Southwest Airlines
4:55 pmBUF
3h 40m
Nonstop
6:35 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Thu, Jan 28

Frontier Airlines
9:00 amDEN
6h 38m
ATL · 1h 27m
5:38 pmBUF
Southwest Airlines
4:55 pmBUF
3h 40m
Nonstop
6:35 pmDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

American Airlines
2:35 pmDEN
6h 58m
ORD · 2h 35m
11:33 pmBUF
American Airlines
6:49 pmBUF
6h 8m
ORD · 1h 6m
10:57 pmDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

JetBlue Airways
11:30 pmDEN
6h 56m
JFK · 1h 52m
8:26 am+1BUF
Southwest Airlines
4:55 pmBUF
3h 40m
Nonstop
6:35 pmDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Delta Air Lines
10:39 amDEN
6h 34m
DTW · 2h 36m
7:13 pmBUF
Delta Air Lines
12:00 pmBUF
7h 10m
DTW · 2h 43m
5:10 pmDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

American Airlines
6:30 amDEN
6h 27m
CLT · 1h 20m
2:57 pmBUF
American Airlines
6:49 pmBUF
6h 8m
ORD · 1h 6m
10:57 pmDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Southwest Airlines
5:00 amDEN
6h 20m
DAL · 1h 40m
1:20 pmBUF
Southwest Airlines
4:55 pmBUF
3h 40m
Nonstop
6:35 pmDEN

Round-trip total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ BUF

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-01-21 → 2027-01-28Southwest AirlinesWN1568 / WN818$351.502026-10-29T01:03:30Z
2027-01-21 → 2027-01-28United AirlinesUA731 / UA1727$375.262026-10-29T01:03:30Z
2027-01-21 → 2027-01-28Frontier Airlines / Southwest AirlinesF93294 + F91408 / WN818$280.252026-10-29T01:03:30Z
2027-01-21 → 2027-01-28American AirlinesAA1277 + AA564 / AA2306 + AA1387$332.502026-10-29T01:03:30Z
2027-01-21 → 2027-01-28JetBlue Airways / Southwest AirlinesB698 + B61602 / WN818$332.502026-10-29T01:03:30Z
2027-01-21 → 2027-01-28Delta Air LinesDL1113 + DL3843 / DL4636 + DL2431$351.502026-10-29T01:03:30Z
2027-01-21 → 2027-01-28Southwest AirlinesWN988 / WN818$351.502026-10-29T01:03:30Z
2027-01-21 → 2027-01-28American AirlinesAA769 + AA3962 / AA2306 + AA1387$332.502026-10-29T01:03:30Z
2027-01-21 → 2027-01-28Southwest AirlinesWN1614 + WN4608 / WN818$332.502026-10-29T01:03:30Z

2027-01-21 → 2027-01-28 · $351.50

  • Southwest Airlines WN1568: DEN 2027-01-21 13:15:00 → BUF 2027-01-21 18:10:00; nonstop; 175 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2027-01-28 16:55:00 → DEN 2027-01-28 18:35:00; nonstop; 220 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $375.26

  • United Airlines UA731: DEN 2027-01-21 17:25:00 → BUF 2027-01-21 22:33:00; nonstop; 188 minutes. Local airport times.
  • United Airlines UA1727: BUF 2027-01-28 08:17:00 → DEN 2027-01-28 10:03:00; nonstop; 226 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $280.25

  • Frontier Airlines F93294 / F91408: DEN 2027-01-21 09:00:00 → BUF 2027-01-21 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2027-01-21 09:00:00 → ATL 2027-01-21 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2027-01-21 15:27:00 → BUF 2027-01-21 17:38:00.
  • Southwest Airlines WN818: BUF 2027-01-28 16:55:00 → DEN 2027-01-28 18:35:00; nonstop; 220 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $332.50

  • American Airlines AA1277 / AA564: DEN 2027-01-21 14:35:00 → BUF 2027-01-21 23:33:00; 1 stop(s) via ORD; 418 minutes. Local airport times.
    • AA1277: DEN 2027-01-21 14:35:00 → ORD 2027-01-21 18:14:00; layover at ORD: 155 minutes.
    • AA564: ORD 2027-01-21 20:49:00 → BUF 2027-01-21 23:33:00.
  • American Airlines AA2306 / AA1387: BUF 2027-01-28 18:49:00 → DEN 2027-01-28 22:57:00; 1 stop(s) via ORD; 368 minutes. Local airport times.
    • AA2306: BUF 2027-01-28 18:49:00 → ORD 2027-01-28 19:59:00; layover at ORD: 66 minutes.
    • AA1387: ORD 2027-01-28 21:05:00 → DEN 2027-01-28 22:57:00.

2027-01-21 → 2027-01-28 · $332.50

  • JetBlue Airways B698 / B61602: DEN 2027-01-21 23:30:00 → BUF 2027-01-22 08:26:00; 1 stop(s) via JFK; 416 minutes. Local airport times.
    • B698: DEN 2027-01-21 23:30:00 → JFK 2027-01-22 05:07:00; layover at JFK: 112 minutes.
    • B61602: JFK 2027-01-22 06:59:00 → BUF 2027-01-22 08:26:00.
  • Southwest Airlines WN818: BUF 2027-01-28 16:55:00 → DEN 2027-01-28 18:35:00; nonstop; 220 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $351.50

  • Delta Air Lines DL1113 / DL3843: DEN 2027-01-21 10:39:00 → BUF 2027-01-21 19:13:00; 1 stop(s) via DTW; 394 minutes. Local airport times.
    • DL1113: DEN 2027-01-21 10:39:00 → DTW 2027-01-21 15:20:00; layover at DTW: 156 minutes.
    • DL3843: DTW 2027-01-21 17:56:00 → BUF 2027-01-21 19:13:00.
  • Delta Air Lines DL4636 / DL2431: BUF 2027-01-28 12:00:00 → DEN 2027-01-28 17:10:00; 1 stop(s) via DTW; 430 minutes. Local airport times.
    • DL4636: BUF 2027-01-28 12:00:00 → DTW 2027-01-28 13:17:00; layover at DTW: 163 minutes.
    • DL2431: DTW 2027-01-28 16:00:00 → DEN 2027-01-28 17:10:00.

2027-01-21 → 2027-01-28 · $351.50

  • Southwest Airlines WN988: DEN 2027-01-21 11:50:00 → BUF 2027-01-21 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2027-01-28 16:55:00 → DEN 2027-01-28 18:35:00; nonstop; 220 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $332.50

  • American Airlines AA769 / AA3962: DEN 2027-01-21 06:30:00 → BUF 2027-01-21 14:57:00; 1 stop(s) via CLT; 387 minutes. Local airport times.
    • AA769: DEN 2027-01-21 06:30:00 → CLT 2027-01-21 11:45:00; layover at CLT: 80 minutes.
    • AA3962: CLT 2027-01-21 13:05:00 → BUF 2027-01-21 14:57:00.
  • American Airlines AA2306 / AA1387: BUF 2027-01-28 18:49:00 → DEN 2027-01-28 22:57:00; 1 stop(s) via ORD; 368 minutes. Local airport times.
    • AA2306: BUF 2027-01-28 18:49:00 → ORD 2027-01-28 19:59:00; layover at ORD: 66 minutes.
    • AA1387: ORD 2027-01-28 21:05:00 → DEN 2027-01-28 22:57:00.

2027-01-21 → 2027-01-28 · $332.50

  • Southwest Airlines WN1614 / WN4608: DEN 2027-01-21 05:00:00 → BUF 2027-01-21 13:20:00; 1 stop(s) via DAL; 380 minutes. Local airport times.
    • WN1614: DEN 2027-01-21 05:00:00 → DAL 2027-01-21 07:55:00; layover at DAL: 100 minutes.
    • WN4608: DAL 2027-01-21 09:35:00 → BUF 2027-01-21 13:20:00.
  • Southwest Airlines WN818: BUF 2027-01-28 16:55:00 → DEN 2027-01-28 18:35:00; nonstop; 220 minutes. Local airport times.

More dates for this route