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Denver → Buffalo

Jan 4, 2027 · return Jan 5, 2027

DEN → BUF1 adulteconomyRound trip

9 flight options · 5 airlines

Nonstop flights

Mon, Jan 4 – Tue, Jan 5

Southwest Airlines
11:50 amDEN
3h
Nonstop
4:50 pmBUF
Southwest Airlines
2:40 pmBUF
3h 50m
Nonstop
4:30 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Jan 4 – Tue, Jan 5

United Airlines
5:25 pmDEN
3h 8m
Nonstop
10:33 pmBUF
United Airlines
8:50 amBUF
3h 45m
Nonstop
10:35 amDEN

Round-trip total · 1 adult · Taxes included

Mon, Jan 4 – Tue, Jan 5

Southwest Airlines
1:15 pmDEN
2h 55m
Nonstop
6:10 pmBUF
Southwest Airlines
2:40 pmBUF
3h 50m
Nonstop
4:30 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Jan 4 – Tue, Jan 5

Frontier Airlines
9:00 amDEN
6h 38m
ATL · 1h 27m
5:38 pmBUF
United Airlines
8:50 amBUF
3h 45m
Nonstop
10:35 amDEN

Round-trip total · 1 adult · Taxes included

Mon, Jan 4 – Tue, Jan 5

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

Mon, Jan 4 – Tue, Jan 5

Delta Air Lines
10:39 amDEN
6h 34m
DTW · 2h 36m
7:13 pmBUF
Delta Air Lines
4:05 pmBUF
6h 14m
MSP · 1h 27m
8:19 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Jan 4 – Tue, Jan 5

Southwest Airlines
5:00 amDEN
6h 20m
DAL · 1h 40m
1:20 pmBUF
Southwest Airlines
2:40 pmBUF
3h 50m
Nonstop
4:30 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Jan 4 – Tue, Jan 5

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

Mon, Jan 4 – Tue, Jan 5

Southwest Airlines
3:45 pmDEN
3h 5m
Nonstop
8:50 pmBUF
Southwest Airlines
2:00 pmBUF
6h 10m
MDW · 1h 35m
6:10 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)
2027-01-04 → 2027-01-05Southwest AirlinesWN988 / WN818$421.802026-10-29T01:03:30Z
2027-01-04 → 2027-01-05United AirlinesUA731 / UA1727$450.312026-10-29T01:03:30Z
2027-01-04 → 2027-01-05Frontier Airlines / United AirlinesF93294 + F91408 / UA1727$333.932026-10-29T01:03:30Z
2027-01-04 → 2027-01-05American AirlinesAA769 + AA3962 / AA2306 + AA1387$399.002026-10-29T01:03:30Z
2027-01-04 → 2027-01-05Delta Air LinesDL1113 + DL3843 / DL8783 + DL2931$421.802026-10-29T01:03:30Z
2027-01-04 → 2027-01-05Southwest AirlinesWN1568 / WN818$421.802026-10-29T01:03:30Z
2027-01-04 → 2027-01-05Southwest AirlinesWN1614 + WN4608 / WN818$395.202026-10-29T01:03:30Z
2027-01-04 → 2027-01-05American AirlinesAA1277 + AA564 / AA2306 + AA1387$399.002026-10-29T01:03:30Z
2027-01-04 → 2027-01-05Southwest AirlinesWN988 / WN726 + WN4606$402.802026-10-29T01:03:30Z

2027-01-04 → 2027-01-05 · $421.80

  • Southwest Airlines WN988: DEN 2027-01-04 11:50:00 → BUF 2027-01-04 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2027-01-05 14:40:00 → DEN 2027-01-05 16:30:00; nonstop; 230 minutes. Local airport times.

2027-01-04 → 2027-01-05 · $450.31

  • United Airlines UA731: DEN 2027-01-04 17:25:00 → BUF 2027-01-04 22:33:00; nonstop; 188 minutes. Local airport times.
  • United Airlines UA1727: BUF 2027-01-05 08:50:00 → DEN 2027-01-05 10:35:00; nonstop; 225 minutes. Local airport times.

2027-01-04 → 2027-01-05 · $333.93

  • Frontier Airlines F93294 / F91408: DEN 2027-01-04 09:00:00 → BUF 2027-01-04 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2027-01-04 09:00:00 → ATL 2027-01-04 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2027-01-04 15:27:00 → BUF 2027-01-04 17:38:00.
  • United Airlines UA1727: BUF 2027-01-05 08:50:00 → DEN 2027-01-05 10:35:00; nonstop; 225 minutes. Local airport times.

2027-01-04 → 2027-01-05 · $399.00

  • American Airlines AA769 / AA3962: DEN 2027-01-04 06:30:00 → BUF 2027-01-04 14:57:00; 1 stop(s) via CLT; 387 minutes. Local airport times.
    • AA769: DEN 2027-01-04 06:30:00 → CLT 2027-01-04 11:45:00; layover at CLT: 80 minutes.
    • AA3962: CLT 2027-01-04 13:05:00 → BUF 2027-01-04 14:57:00.
  • American Airlines AA2306 / AA1387: BUF 2027-01-05 18:49:00 → DEN 2027-01-05 22:57:00; 1 stop(s) via ORD; 368 minutes. Local airport times.
    • AA2306: BUF 2027-01-05 18:49:00 → ORD 2027-01-05 19:59:00; layover at ORD: 66 minutes.
    • AA1387: ORD 2027-01-05 21:05:00 → DEN 2027-01-05 22:57:00.

2027-01-04 → 2027-01-05 · $421.80

  • Delta Air Lines DL1113 / DL3843: DEN 2027-01-04 10:39:00 → BUF 2027-01-04 19:13:00; 1 stop(s) via DTW; 394 minutes. Local airport times.
    • DL1113: DEN 2027-01-04 10:39:00 → DTW 2027-01-04 15:20:00; layover at DTW: 156 minutes.
    • DL3843: DTW 2027-01-04 17:56:00 → BUF 2027-01-04 19:13:00.
  • Delta Air Lines DL8783 / DL2931: BUF 2027-01-05 16:05:00 → DEN 2027-01-05 20:19:00; 1 stop(s) via MSP; 374 minutes. Local airport times.
    • DL8783: BUF 2027-01-05 16:05:00 → MSP 2027-01-05 17:32:00; layover at MSP: 87 minutes.
    • DL2931: MSP 2027-01-05 18:59:00 → DEN 2027-01-05 20:19:00.

2027-01-04 → 2027-01-05 · $421.80

  • Southwest Airlines WN1568: DEN 2027-01-04 13:15:00 → BUF 2027-01-04 18:10:00; nonstop; 175 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2027-01-05 14:40:00 → DEN 2027-01-05 16:30:00; nonstop; 230 minutes. Local airport times.

2027-01-04 → 2027-01-05 · $395.20

  • Southwest Airlines WN1614 / WN4608: DEN 2027-01-04 05:00:00 → BUF 2027-01-04 13:20:00; 1 stop(s) via DAL; 380 minutes. Local airport times.
    • WN1614: DEN 2027-01-04 05:00:00 → DAL 2027-01-04 07:55:00; layover at DAL: 100 minutes.
    • WN4608: DAL 2027-01-04 09:35:00 → BUF 2027-01-04 13:20:00.
  • Southwest Airlines WN818: BUF 2027-01-05 14:40:00 → DEN 2027-01-05 16:30:00; nonstop; 230 minutes. Local airport times.

2027-01-04 → 2027-01-05 · $399.00

  • American Airlines AA1277 / AA564: DEN 2027-01-04 14:35:00 → BUF 2027-01-04 23:33:00; 1 stop(s) via ORD; 418 minutes. Local airport times.
    • AA1277: DEN 2027-01-04 14:35:00 → ORD 2027-01-04 18:14:00; layover at ORD: 155 minutes.
    • AA564: ORD 2027-01-04 20:49:00 → BUF 2027-01-04 23:33:00.
  • American Airlines AA2306 / AA1387: BUF 2027-01-05 18:49:00 → DEN 2027-01-05 22:57:00; 1 stop(s) via ORD; 368 minutes. Local airport times.
    • AA2306: BUF 2027-01-05 18:49:00 → ORD 2027-01-05 19:59:00; layover at ORD: 66 minutes.
    • AA1387: ORD 2027-01-05 21:05:00 → DEN 2027-01-05 22:57:00.

2027-01-04 → 2027-01-05 · $402.80

  • Southwest Airlines WN988: DEN 2027-01-04 15:45:00 → BUF 2027-01-04 20:50:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN726 / WN4606: BUF 2027-01-05 14:00:00 → DEN 2027-01-05 18:10:00; 1 stop(s) via MDW; 370 minutes. Local airport times.
    • WN726: BUF 2027-01-05 14:00:00 → MDW 2027-01-05 14:50:00; layover at MDW: 95 minutes.
    • WN4606: MDW 2027-01-05 16:25:00 → DEN 2027-01-05 18:10:00.

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