Travel with Axel,
get the best price.

Denver → Buffalo

Jan 8, 2027 · return Jan 18, 2027

DEN → BUF1 adulteconomyRound trip

9 flight options · 6 airlines

Nonstop flights

Fri, Jan 8 – Mon, Jan 18

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

Fri, Jan 8 – Mon, Jan 18

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

Fri, Jan 8 – Mon, Jan 18

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

One-stop flights

Fri, Jan 8 – Mon, Jan 18

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

Fri, Jan 8 – Mon, Jan 18

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

Fri, Jan 8 – Mon, Jan 18

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

Fri, Jan 8 – Mon, Jan 18

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

Fri, Jan 8 – Mon, Jan 18

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

Fri, Jan 8 – Mon, Jan 18

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

Make this trip yours

DEN ⇄ BUF

Economy

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

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Southwest Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

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)
2027-01-08 → 2027-01-18Southwest AirlinesWN988 / WN818$351.502026-10-29T01:03:30Z
2027-01-08 → 2027-01-18United AirlinesUA731 / UA1727$375.262026-10-29T01:03:30Z
2027-01-08 → 2027-01-18Frontier Airlines / Southwest AirlinesF93294 + F91408 / WN818$280.252026-10-29T01:03:30Z
2027-01-08 → 2027-01-18American AirlinesAA769 + AA3962 / AA2306 + AA1387$332.502026-10-29T01:03:30Z
2027-01-08 → 2027-01-18JetBlue Airways / Southwest AirlinesB698 + B61602 / WN818$332.502026-10-29T01:03:30Z
2027-01-08 → 2027-01-18Delta Air LinesDL1113 + DL3843 / DL8783 + DL2931$351.502026-10-29T01:03:30Z
2027-01-08 → 2027-01-18Southwest AirlinesWN1568 / WN818$351.502026-10-29T01:03:30Z
2027-01-08 → 2027-01-18Southwest AirlinesWN1614 + WN4608 / WN818$332.502026-10-29T01:03:30Z
2027-01-08 → 2027-01-18American AirlinesAA1277 + AA564 / AA2306 + AA1387$332.502026-10-29T01:03:30Z

2027-01-08 → 2027-01-18 · $351.50

  • Southwest Airlines WN988: DEN 2027-01-08 11:50:00 → BUF 2027-01-08 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2027-01-18 16:55:00 → DEN 2027-01-18 18:35:00; nonstop; 220 minutes. Local airport times.

2027-01-08 → 2027-01-18 · $375.26

  • United Airlines UA731: DEN 2027-01-08 17:25:00 → BUF 2027-01-08 22:33:00; nonstop; 188 minutes. Local airport times.
  • United Airlines UA1727: BUF 2027-01-18 08:50:00 → DEN 2027-01-18 10:35:00; nonstop; 225 minutes. Local airport times.

2027-01-08 → 2027-01-18 · $280.25

  • Frontier Airlines F93294 / F91408: DEN 2027-01-08 09:00:00 → BUF 2027-01-08 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2027-01-08 09:00:00 → ATL 2027-01-08 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2027-01-08 15:27:00 → BUF 2027-01-08 17:38:00.
  • Southwest Airlines WN818: BUF 2027-01-18 16:55:00 → DEN 2027-01-18 18:35:00; nonstop; 220 minutes. Local airport times.

2027-01-08 → 2027-01-18 · $332.50

  • American Airlines AA769 / AA3962: DEN 2027-01-08 06:30:00 → BUF 2027-01-08 14:57:00; 1 stop(s) via CLT; 387 minutes. Local airport times.
    • AA769: DEN 2027-01-08 06:30:00 → CLT 2027-01-08 11:45:00; layover at CLT: 80 minutes.
    • AA3962: CLT 2027-01-08 13:05:00 → BUF 2027-01-08 14:57:00.
  • American Airlines AA2306 / AA1387: BUF 2027-01-18 18:49:00 → DEN 2027-01-18 22:57:00; 1 stop(s) via ORD; 368 minutes. Local airport times.
    • AA2306: BUF 2027-01-18 18:49:00 → ORD 2027-01-18 19:59:00; layover at ORD: 66 minutes.
    • AA1387: ORD 2027-01-18 21:05:00 → DEN 2027-01-18 22:57:00.

2027-01-08 → 2027-01-18 · $332.50

  • JetBlue Airways B698 / B61602: DEN 2027-01-08 23:30:00 → BUF 2027-01-09 08:26:00; 1 stop(s) via JFK; 416 minutes. Local airport times.
    • B698: DEN 2027-01-08 23:30:00 → JFK 2027-01-09 05:07:00; layover at JFK: 112 minutes.
    • B61602: JFK 2027-01-09 06:59:00 → BUF 2027-01-09 08:26:00.
  • Southwest Airlines WN818: BUF 2027-01-18 16:55:00 → DEN 2027-01-18 18:35:00; nonstop; 220 minutes. Local airport times.

2027-01-08 → 2027-01-18 · $351.50

  • Delta Air Lines DL1113 / DL3843: DEN 2027-01-08 10:39:00 → BUF 2027-01-08 19:13:00; 1 stop(s) via DTW; 394 minutes. Local airport times.
    • DL1113: DEN 2027-01-08 10:39:00 → DTW 2027-01-08 15:20:00; layover at DTW: 156 minutes.
    • DL3843: DTW 2027-01-08 17:56:00 → BUF 2027-01-08 19:13:00.
  • Delta Air Lines DL8783 / DL2931: BUF 2027-01-18 16:05:00 → DEN 2027-01-18 20:19:00; 1 stop(s) via MSP; 374 minutes. Local airport times.
    • DL8783: BUF 2027-01-18 16:05:00 → MSP 2027-01-18 17:32:00; layover at MSP: 87 minutes.
    • DL2931: MSP 2027-01-18 18:59:00 → DEN 2027-01-18 20:19:00.

2027-01-08 → 2027-01-18 · $351.50

  • Southwest Airlines WN1568: DEN 2027-01-08 13:15:00 → BUF 2027-01-08 18:10:00; nonstop; 175 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2027-01-18 16:55:00 → DEN 2027-01-18 18:35:00; nonstop; 220 minutes. Local airport times.

2027-01-08 → 2027-01-18 · $332.50

  • Southwest Airlines WN1614 / WN4608: DEN 2027-01-08 05:00:00 → BUF 2027-01-08 13:20:00; 1 stop(s) via DAL; 380 minutes. Local airport times.
    • WN1614: DEN 2027-01-08 05:00:00 → DAL 2027-01-08 07:55:00; layover at DAL: 100 minutes.
    • WN4608: DAL 2027-01-08 09:35:00 → BUF 2027-01-08 13:20:00.
  • Southwest Airlines WN818: BUF 2027-01-18 16:55:00 → DEN 2027-01-18 18:35:00; nonstop; 220 minutes. Local airport times.

2027-01-08 → 2027-01-18 · $332.50

  • American Airlines AA1277 / AA564: DEN 2027-01-08 14:35:00 → BUF 2027-01-08 23:33:00; 1 stop(s) via ORD; 418 minutes. Local airport times.
    • AA1277: DEN 2027-01-08 14:35:00 → ORD 2027-01-08 18:14:00; layover at ORD: 155 minutes.
    • AA564: ORD 2027-01-08 20:49:00 → BUF 2027-01-08 23:33:00.
  • American Airlines AA2306 / AA1387: BUF 2027-01-18 18:49:00 → DEN 2027-01-18 22:57:00; 1 stop(s) via ORD; 368 minutes. Local airport times.
    • AA2306: BUF 2027-01-18 18:49:00 → ORD 2027-01-18 19:59:00; layover at ORD: 66 minutes.
    • AA1387: ORD 2027-01-18 21:05:00 → DEN 2027-01-18 22:57:00.

More dates for this route