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Denver → Seattle

Dec 7, 2026 · return Dec 9, 2026

DEN → SEA1 adulteconomyRound trip

14 flight options · 6 airlines

Nonstop flights

Mon, Dec 7 – Wed, Dec 9

Frontier Airlines
1:04 pmDEN
3h 8m
Nonstop
3:12 pmSEA
Frontier Airlines
4:37 pmSEA
2h 48m
Nonstop
8:25 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

Alaska Airlines
7:00 amDEN
3h 13m
Nonstop
9:13 amSEA
Alaska Airlines
6:59 pmSEA
2h 39m
Nonstop
10:38 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

Delta Air Lines
6:35 pmDEN
3h 11m
Nonstop
8:46 pmSEA
Delta Air Lines
1:52 pmSEA
2h 45m
Nonstop
5:37 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

United Airlines
4:10 pmDEN
3h 2m
Nonstop
6:12 pmSEA
United Airlines
5:05 amSEA
2h 37m
Nonstop
8:42 amDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

Frontier Airlines
10:08 amDEN
3h 14m
Nonstop
12:22 pmSEA
Frontier Airlines
4:37 pmSEA
2h 48m
Nonstop
8:25 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

Alaska Airlines
3:22 pmDEN
3h 9m
Nonstop
5:31 pmSEA
Alaska Airlines
6:59 pmSEA
2h 39m
Nonstop
10:38 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

United Airlines
11:30 amDEN
3h 5m
Nonstop
1:35 pmSEA
United Airlines
5:05 amSEA
2h 37m
Nonstop
8:42 amDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

Delta Air Lines
1:14 pmDEN
3h 11m
Nonstop
3:25 pmSEA
Delta Air Lines
1:52 pmSEA
2h 45m
Nonstop
5:37 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 7 – Wed, Dec 9

Southwest Airlines
3:40 pmDEN
3h 10m
Nonstop
5:50 pmSEA
Southwest Airlines
5:15 amSEA
6h 15m
SMF · 2h 10m
12:30 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

Air Canada
8:15 amDEN
7h 17m
YVR · 3h 5m
2:32 pmSEA
Air Canada
10:10 amSEA
5h 17m
YVR · 1h 15m
4:27 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

Alaska Airlines
7:40 amDEN
5h 29m
PDX · 1h 15m
12:09 pmSEA
Alaska Airlines
6:59 pmSEA
2h 39m
Nonstop
10:38 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

Southwest Airlines
1:55 pmDEN
5h 45m
SMF · 1h 10m
6:40 pmSEA
Southwest Airlines
5:15 amSEA
6h 15m
SMF · 2h 10m
12:30 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

Southwest Airlines
7:30 amDEN
6h 30m
LAS · 1h 30m
1:00 pmSEA
Southwest Airlines
5:15 amSEA
6h 15m
SMF · 2h 10m
12:30 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Wed, Dec 9

United Airlines
3:53 pmDEN
7h 4m
YVR · 2h 46m
9:57 pmSEA
United Airlines
5:05 amSEA
2h 37m
Nonstop
8:42 amDEN

Round-trip total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ SEA

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 routeOct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 13, 2026 → Nov 16, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 11, 2026 → Dec 14, 2026Dec 12, 2026 → Dec 19, 2026Dec 22, 2026 → Dec 27, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Dec 30, 2026 → Jan 2, 2027Jan 8, 2027 → Jan 11, 2027Jan 9, 2027 → Jan 16, 2027Jan 15, 2027 → Jan 18, 2027Jan 22, 2027 → Jan 25, 2027Jan 23, 2027 → Jan 30, 2027Feb 5, 2027 → Feb 8, 2027Feb 6, 2027 → Feb 13, 2027Feb 12, 2027 → Feb 15, 2027Mar 5, 2027 → Mar 8, 2027Mar 6, 2027 → Mar 13, 2027Mar 25, 2027 → Mar 29, 2027Apr 2, 2027 → Apr 5, 2027Apr 3, 2027 → Apr 10, 2027Apr 30, 2027 → May 3, 2027May 1, 2027 → May 8, 2027May 28, 2027 → May 31, 2027May 29, 2027 → Jun 5, 2027Jun 25, 2027 → Jun 28, 2027Jun 26, 2027 → Jul 3, 2027Jul 2, 2027 → Jul 6, 2027Jul 23, 2027 → Jul 26, 2027Jul 24, 2027 → Jul 31, 2027Aug 20, 2027 → Aug 23, 2027Aug 21, 2027 → Aug 28, 2027Sep 3, 2027 → Sep 6, 2027Sep 17, 2027 → Sep 20, 2027Oct 30, 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)
2026-12-07 → 2026-12-09Frontier AirlinesF91175 / F91916$165.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Alaska AirlinesAS317 / AS310$280.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Delta Air LinesDL2543 / DL2759$290.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09United AirlinesUA2013 / UA757$290.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Southwest AirlinesWN244 / WN3833 + WN2542$285.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Air CanadaAC575 + AC8804 / AC8803 + UA2470$395.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Frontier AirlinesF9605 / F91916$165.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Alaska AirlinesAS493 / AS310$280.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09United AirlinesUA2302 / UA757$290.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Delta Air LinesDL2740 / DL2759$290.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Alaska AirlinesAS686 + AS3217 / AS310$295.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Southwest AirlinesWN3148 + WN1586 / WN3833 + WN2542$300.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09Southwest AirlinesWN1660 + WN948 / WN3833 + WN2542$300.002026-10-29T01:05:09Z
2026-12-07 → 2026-12-09United AirlinesUA1086 + AC8810 / UA757$310.002026-10-29T01:05:09Z

2026-12-07 → 2026-12-09 · $165.00

  • Frontier Airlines F91175: DEN 2026-12-07 13:04:00 → SEA 2026-12-07 15:12:00; nonstop; 188 minutes. Local airport times.
  • Frontier Airlines F91916: SEA 2026-12-09 16:37:00 → DEN 2026-12-09 20:25:00; nonstop; 168 minutes. Local airport times.

2026-12-07 → 2026-12-09 · $280.00

  • Alaska Airlines AS317: DEN 2026-12-07 07:00:00 → SEA 2026-12-07 09:13:00; nonstop; 193 minutes. Local airport times.
  • Alaska Airlines AS310: SEA 2026-12-09 18:59:00 → DEN 2026-12-09 22:38:00; nonstop; 159 minutes. Local airport times.

2026-12-07 → 2026-12-09 · $290.00

  • Delta Air Lines DL2543: DEN 2026-12-07 18:35:00 → SEA 2026-12-07 20:46:00; nonstop; 191 minutes. Local airport times.
  • Delta Air Lines DL2759: SEA 2026-12-09 13:52:00 → DEN 2026-12-09 17:37:00; nonstop; 165 minutes. Local airport times.

2026-12-07 → 2026-12-09 · $290.00

  • United Airlines UA2013: DEN 2026-12-07 16:10:00 → SEA 2026-12-07 18:12:00; nonstop; 182 minutes. Local airport times.
  • United Airlines UA757: SEA 2026-12-09 05:05:00 → DEN 2026-12-09 08:42:00; nonstop; 157 minutes. Local airport times.

2026-12-07 → 2026-12-09 · $285.00

  • Southwest Airlines WN244: DEN 2026-12-07 15:40:00 → SEA 2026-12-07 17:50:00; nonstop; 190 minutes. Local airport times.
  • Southwest Airlines WN3833 / WN2542: SEA 2026-12-09 05:15:00 → DEN 2026-12-09 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
    • WN3833: SEA 2026-12-09 05:15:00 → SMF 2026-12-09 07:05:00; layover at SMF: 130 minutes.
    • WN2542: SMF 2026-12-09 09:15:00 → DEN 2026-12-09 12:30:00.

2026-12-07 → 2026-12-09 · $395.00

  • Air Canada AC575 / AC8804: DEN 2026-12-07 08:15:00 → SEA 2026-12-07 14:32:00; 1 stop(s) via YVR; 437 minutes. Local airport times.
    • AC575: DEN 2026-12-07 08:15:00 → YVR 2026-12-07 11:25:00; layover at YVR: 185 minutes.
    • AC8804: YVR 2026-12-07 14:30:00 → SEA 2026-12-07 14:32:00.
  • Air Canada AC8803 / UA2470: SEA 2026-12-09 10:10:00 → DEN 2026-12-09 16:27:00; 1 stop(s) via YVR; 317 minutes. Local airport times.
    • AC8803: SEA 2026-12-09 10:10:00 → YVR 2026-12-09 12:21:00; layover at YVR: 75 minutes.
    • UA2470: YVR 2026-12-09 13:36:00 → DEN 2026-12-09 16:27:00.

2026-12-07 → 2026-12-09 · $165.00

  • Frontier Airlines F9605: DEN 2026-12-07 10:08:00 → SEA 2026-12-07 12:22:00; nonstop; 194 minutes. Local airport times.
  • Frontier Airlines F91916: SEA 2026-12-09 16:37:00 → DEN 2026-12-09 20:25:00; nonstop; 168 minutes. Local airport times.

2026-12-07 → 2026-12-09 · $280.00

  • Alaska Airlines AS493: DEN 2026-12-07 15:22:00 → SEA 2026-12-07 17:31:00; nonstop; 189 minutes. Local airport times.
  • Alaska Airlines AS310: SEA 2026-12-09 18:59:00 → DEN 2026-12-09 22:38:00; nonstop; 159 minutes. Local airport times.

2026-12-07 → 2026-12-09 · $290.00

  • United Airlines UA2302: DEN 2026-12-07 11:30:00 → SEA 2026-12-07 13:35:00; nonstop; 185 minutes. Local airport times.
  • United Airlines UA757: SEA 2026-12-09 05:05:00 → DEN 2026-12-09 08:42:00; nonstop; 157 minutes. Local airport times.

2026-12-07 → 2026-12-09 · $290.00

  • Delta Air Lines DL2740: DEN 2026-12-07 13:14:00 → SEA 2026-12-07 15:25:00; nonstop; 191 minutes. Local airport times.
  • Delta Air Lines DL2759: SEA 2026-12-09 13:52:00 → DEN 2026-12-09 17:37:00; nonstop; 165 minutes. Local airport times.

2026-12-07 → 2026-12-09 · $295.00

  • Alaska Airlines AS686 / AS3217: DEN 2026-12-07 07:40:00 → SEA 2026-12-07 12:09:00; 1 stop(s) via PDX; 329 minutes. Local airport times.
    • AS686: DEN 2026-12-07 07:40:00 → PDX 2026-12-07 09:39:00; layover at PDX: 75 minutes.
    • AS3217: PDX 2026-12-07 10:54:00 → SEA 2026-12-07 12:09:00.
  • Alaska Airlines AS310: SEA 2026-12-09 18:59:00 → DEN 2026-12-09 22:38:00; nonstop; 159 minutes. Local airport times.

2026-12-07 → 2026-12-09 · $300.00

  • Southwest Airlines WN3148 / WN1586: DEN 2026-12-07 13:55:00 → SEA 2026-12-07 18:40:00; 1 stop(s) via SMF; 345 minutes. Local airport times.
    • WN3148: DEN 2026-12-07 13:55:00 → SMF 2026-12-07 15:30:00; layover at SMF: 70 minutes.
    • WN1586: SMF 2026-12-07 16:40:00 → SEA 2026-12-07 18:40:00.
  • Southwest Airlines WN3833 / WN2542: SEA 2026-12-09 05:15:00 → DEN 2026-12-09 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
    • WN3833: SEA 2026-12-09 05:15:00 → SMF 2026-12-09 07:05:00; layover at SMF: 130 minutes.
    • WN2542: SMF 2026-12-09 09:15:00 → DEN 2026-12-09 12:30:00.

2026-12-07 → 2026-12-09 · $300.00

  • Southwest Airlines WN1660 / WN948: DEN 2026-12-07 07:30:00 → SEA 2026-12-07 13:00:00; 1 stop(s) via LAS; 390 minutes. Local airport times.
    • WN1660: DEN 2026-12-07 07:30:00 → LAS 2026-12-07 08:30:00; layover at LAS: 90 minutes.
    • WN948: LAS 2026-12-07 10:00:00 → SEA 2026-12-07 13:00:00.
  • Southwest Airlines WN3833 / WN2542: SEA 2026-12-09 05:15:00 → DEN 2026-12-09 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
    • WN3833: SEA 2026-12-09 05:15:00 → SMF 2026-12-09 07:05:00; layover at SMF: 130 minutes.
    • WN2542: SMF 2026-12-09 09:15:00 → DEN 2026-12-09 12:30:00.

2026-12-07 → 2026-12-09 · $310.00

  • United Airlines UA1086 / AC8810: DEN 2026-12-07 15:53:00 → SEA 2026-12-07 21:57:00; 1 stop(s) via YVR; 424 minutes. Local airport times.
    • UA1086: DEN 2026-12-07 15:53:00 → YVR 2026-12-07 19:04:00; layover at YVR: 166 minutes.
    • AC8810: YVR 2026-12-07 21:50:00 → SEA 2026-12-07 21:57:00.
  • United Airlines UA757: SEA 2026-12-09 05:05:00 → DEN 2026-12-09 08:42:00; nonstop; 157 minutes. Local airport times.

More dates for this route