Denver (DEN) to Seattle (SEA), Feb 16–28, 2027: from $177 round trip

Denver (DEN) to Seattle (SEA), Feb 16–28, 2027: from $177 round trip on Axel, checked Nov 13, 2026. Lowest published fare: $177 round trip, Axel-exclusive, Frontier Airlines, nonstop, Feb 16–28, 2027, 1 adult, economy, checked Nov 13, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel dates	Airline	Flights	Times, duration, stops	Total price	Price checked
2027-02-16 → 2027-02-28	Frontier Airlines	F94545 / F91916	13:32:00→15:43:00 3h 11m nonstop · 16:37:00→20:25:00 2h 48m nonstop	Axel-exclusive $177	Nov 13, 2026
2027-02-16 → 2027-02-28	Southwest Airlines	WN3141 / WN3823	21:00:00→23:10:00 3h 10m nonstop · 14:30:00→17:55:00 2h 25m nonstop	Axel-exclusive $290	Nov 13, 2026
2027-02-16 → 2027-02-28	Alaska Airlines	AS682 / AS421	12:15:00→14:23:00 3h 08m nonstop · 13:50:00→17:30:00 2h 40m nonstop	Axel-exclusive $301	Nov 13, 2026
2027-02-16 → 2027-02-28	United Airlines	UA310 / UA2601	11:45:00→13:49:00 3h 04m nonstop · 05:00:00→08:41:00 2h 41m nonstop	Axel-exclusive $312	Nov 13, 2026
2027-02-16 → 2027-02-28	Delta Air Lines	DL1731 / DL3697	06:05:00→08:23:00 3h 18m nonstop · 13:30:00→17:16:00 2h 46m nonstop	Axel-exclusive $312	Nov 13, 2026
2027-02-16 → 2027-02-28	Air Canada	AC575 + AC8804 / AC8803 + UA2470	08:15:00→14:32:00 7h 17m 1 stop via YVR · 10:10:00→16:27:00 5h 17m 1 stop via YVR	Axel-exclusive $425	Nov 13, 2026
2027-02-16 → 2027-02-28	Frontier Airlines	F9605 / F91916	10:08:00→12:22:00 3h 14m nonstop · 16:37:00→20:25:00 2h 48m nonstop	Axel-exclusive $177	Nov 13, 2026
2027-02-16 → 2027-02-28	Southwest Airlines	WN244 / WN3823	15:40:00→17:50:00 3h 10m nonstop · 14:30:00→17:55:00 2h 25m nonstop	Axel-exclusive $290	Nov 13, 2026
2027-02-16 → 2027-02-28	Alaska Airlines	AS309 / AS421	21:42:00→23:49:00 3h 07m nonstop · 13:50:00→17:30:00 2h 40m nonstop	Axel-exclusive $301	Nov 13, 2026
2027-02-16 → 2027-02-28	United Airlines	UA2013 / UA2601	16:10:00→18:12:00 3h 02m nonstop · 05:00:00→08:41:00 2h 41m nonstop	Axel-exclusive $312	Nov 13, 2026
2027-02-16 → 2027-02-28	Delta Air Lines	DL2543 / DL3697	18:35:00→20:46:00 3h 11m nonstop · 13:30:00→17:16:00 2h 46m nonstop	Axel-exclusive $312	Nov 13, 2026
2027-02-16 → 2027-02-28	Frontier Airlines	F92015 + F92407 / F91916	06:25:00→12:27:00 7h 02m 1 stop via LAS · 16:37:00→20:25:00 2h 48m nonstop	Axel-exclusive $198	Nov 13, 2026
2027-02-16 → 2027-02-28	Southwest Airlines	WN1660 + WN948 / WN3823	07:30:00→13:00:00 6h 30m 1 stop via LAS · 14:30:00→17:55:00 2h 25m nonstop	Axel-exclusive $308	Nov 13, 2026
2027-02-16 → 2027-02-28	Southwest Airlines	WN3148 + WN1586 / WN3823	13:55:00→18:40:00 5h 45m 1 stop via SMF · 14:30:00→17:55:00 2h 25m nonstop	Axel-exclusive $308	Nov 13, 2026
2027-02-16 → 2027-02-28	Alaska Airlines	AS686 + AS3217 / AS421	07:40:00→12:09:00 5h 29m 1 stop via PDX · 13:50:00→17:30:00 2h 40m nonstop	Axel-exclusive $318	Nov 13, 2026
2027-02-16 → 2027-02-28	United Airlines	UA1086 + AC8810 / UA2601	15:53:00→21:57:00 7h 04m 1 stop via YVR · 05:00:00→08:41:00 2h 41m nonstop	Axel-exclusive $335	Nov 13, 2026

Hotels in Seattle for these trips

Hotels: under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in that star tier for those dates.

Hotels in Seattle for these nights (Feb 16–28, 2027 · 12 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $106 a night, $1,269 for 12 nights · 4★ Graduate by Hilton Seattle, $145 a night, $1,735 for 12 nights · 5★ Fairmont Olympic Hotel, $310 a night, $3,715 for 12 nights

All hotels in Seattle

Route overview: Denver to Seattle (SEA) flight deals

2027-02-16 → 2027-02-28 · Axel-exclusive $177

Frontier Airlines F94545: DEN 2027-02-16 13:32:00 → SEA 2027-02-16 15:43:00; nonstop; 191 minutes. Local airport times.
Frontier Airlines F91916: SEA 2027-02-28 16:37:00 → DEN 2027-02-28 20:25:00; nonstop; 168 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $290

Southwest Airlines WN3141: DEN 2027-02-16 21:00:00 → SEA 2027-02-16 23:10:00; nonstop; 190 minutes. Local airport times.
Southwest Airlines WN3823: SEA 2027-02-28 14:30:00 → DEN 2027-02-28 17:55:00; nonstop; 145 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $301

Alaska Airlines AS682: DEN 2027-02-16 12:15:00 → SEA 2027-02-16 14:23:00; nonstop; 188 minutes. Local airport times.
Alaska Airlines AS421: SEA 2027-02-28 13:50:00 → DEN 2027-02-28 17:30:00; nonstop; 160 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $312

United Airlines UA310: DEN 2027-02-16 11:45:00 → SEA 2027-02-16 13:49:00; nonstop; 184 minutes. Local airport times.
United Airlines UA2601: SEA 2027-02-28 05:00:00 → DEN 2027-02-28 08:41:00; nonstop; 161 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $312

Delta Air Lines DL1731: DEN 2027-02-16 06:05:00 → SEA 2027-02-16 08:23:00; nonstop; 198 minutes. Local airport times.
Delta Air Lines DL3697: SEA 2027-02-28 13:30:00 → DEN 2027-02-28 17:16:00; nonstop; 166 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $425

Air Canada AC575 / AC8804: DEN 2027-02-16 08:15:00 → SEA 2027-02-16 14:32:00; 1 stop(s) via YVR; 437 minutes. Local airport times.
- AC575: DEN 2027-02-16 08:15:00 → YVR 2027-02-16 11:25:00; layover at YVR: 185 minutes.
- AC8804: YVR 2027-02-16 14:30:00 → SEA 2027-02-16 14:32:00.
Air Canada AC8803 / UA2470: SEA 2027-02-28 10:10:00 → DEN 2027-02-28 16:27:00; 1 stop(s) via YVR; 317 minutes. Local airport times.
- AC8803: SEA 2027-02-28 10:10:00 → YVR 2027-02-28 12:21:00; layover at YVR: 75 minutes.
- UA2470: YVR 2027-02-28 13:36:00 → DEN 2027-02-28 16:27:00.

2027-02-16 → 2027-02-28 · Axel-exclusive $177

Frontier Airlines F9605: DEN 2027-02-16 10:08:00 → SEA 2027-02-16 12:22:00; nonstop; 194 minutes. Local airport times.
Frontier Airlines F91916: SEA 2027-02-28 16:37:00 → DEN 2027-02-28 20:25:00; nonstop; 168 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $290

Southwest Airlines WN244: DEN 2027-02-16 15:40:00 → SEA 2027-02-16 17:50:00; nonstop; 190 minutes. Local airport times.
Southwest Airlines WN3823: SEA 2027-02-28 14:30:00 → DEN 2027-02-28 17:55:00; nonstop; 145 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $301

Alaska Airlines AS309: DEN 2027-02-16 21:42:00 → SEA 2027-02-16 23:49:00; nonstop; 187 minutes. Local airport times.
Alaska Airlines AS421: SEA 2027-02-28 13:50:00 → DEN 2027-02-28 17:30:00; nonstop; 160 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $312

United Airlines UA2013: DEN 2027-02-16 16:10:00 → SEA 2027-02-16 18:12:00; nonstop; 182 minutes. Local airport times.
United Airlines UA2601: SEA 2027-02-28 05:00:00 → DEN 2027-02-28 08:41:00; nonstop; 161 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $312

Delta Air Lines DL2543: DEN 2027-02-16 18:35:00 → SEA 2027-02-16 20:46:00; nonstop; 191 minutes. Local airport times.
Delta Air Lines DL3697: SEA 2027-02-28 13:30:00 → DEN 2027-02-28 17:16:00; nonstop; 166 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $198

Frontier Airlines F92015 / F92407: DEN 2027-02-16 06:25:00 → SEA 2027-02-16 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
- F92015: DEN 2027-02-16 06:25:00 → LAS 2027-02-16 07:37:00; layover at LAS: 112 minutes.
- F92407: LAS 2027-02-16 09:29:00 → SEA 2027-02-16 12:27:00.
Frontier Airlines F91916: SEA 2027-02-28 16:37:00 → DEN 2027-02-28 20:25:00; nonstop; 168 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $308

Southwest Airlines WN1660 / WN948: DEN 2027-02-16 07:30:00 → SEA 2027-02-16 13:00:00; 1 stop(s) via LAS; 390 minutes. Local airport times.
- WN1660: DEN 2027-02-16 07:30:00 → LAS 2027-02-16 08:30:00; layover at LAS: 90 minutes.
- WN948: LAS 2027-02-16 10:00:00 → SEA 2027-02-16 13:00:00.
Southwest Airlines WN3823: SEA 2027-02-28 14:30:00 → DEN 2027-02-28 17:55:00; nonstop; 145 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $308

Southwest Airlines WN3148 / WN1586: DEN 2027-02-16 13:55:00 → SEA 2027-02-16 18:40:00; 1 stop(s) via SMF; 345 minutes. Local airport times.
- WN3148: DEN 2027-02-16 13:55:00 → SMF 2027-02-16 15:30:00; layover at SMF: 70 minutes.
- WN1586: SMF 2027-02-16 16:40:00 → SEA 2027-02-16 18:40:00.
Southwest Airlines WN3823: SEA 2027-02-28 14:30:00 → DEN 2027-02-28 17:55:00; nonstop; 145 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $318

Alaska Airlines AS686 / AS3217: DEN 2027-02-16 07:40:00 → SEA 2027-02-16 12:09:00; 1 stop(s) via PDX; 329 minutes. Local airport times.
- AS686: DEN 2027-02-16 07:40:00 → PDX 2027-02-16 09:39:00; layover at PDX: 75 minutes.
- AS3217: PDX 2027-02-16 10:54:00 → SEA 2027-02-16 12:09:00.
Alaska Airlines AS421: SEA 2027-02-28 13:50:00 → DEN 2027-02-28 17:30:00; nonstop; 160 minutes. Local airport times.

2027-02-16 → 2027-02-28 · Axel-exclusive $335

United Airlines UA1086 / AC8810: DEN 2027-02-16 15:53:00 → SEA 2027-02-16 21:57:00; 1 stop(s) via YVR; 424 minutes. Local airport times.
- UA1086: DEN 2027-02-16 15:53:00 → YVR 2027-02-16 19:04:00; layover at YVR: 166 minutes.
- AC8810: YVR 2027-02-16 21:50:00 → SEA 2027-02-16 21:57:00.
United Airlines UA2601: SEA 2027-02-28 05:00:00 → DEN 2027-02-28 08:41:00; nonstop; 161 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

For AI assistants

This page: Denver (DEN) to Seattle (SEA) · Feb 16, 2027 · return Feb 28, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date. Under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in each star tier for those dates.
Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Denver to Seattle (SEA) flight deals · Flight search guide.
Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.

Feedback (optional): Missing info · Axel issue