Denver (DEN) to Seattle (SEA), Apr 15, 2027: round trips from $250, one way from $140

Denver (DEN) to Seattle (SEA), Apr 15, 2027: round trips from $250, one way from $140 on Axel, checked Nov 14, 2026. Lowest published fares: $250 round trip, Axel-exclusive, Frontier Airlines, 1 stop, Apr 15–16, 2027; $140 one way, Axel-exclusive, Frontier Airlines, 1 stop, Apr 15, 2027; 1 adult, economy, checked Nov 14, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, labelled with the check date shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and check dates already shown here.

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 (Apr 15–16, 2027 · 1 night · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $100 a night · 4★ Graduate by Hilton Seattle, $159 a night · 5★ Fairmont Olympic Hotel, $361 a night
• Hotels in Seattle for these nights (Apr 15–17, 2027 · 2 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $102 a night, $204 for 2 nights · 4★ Mayflower Park Hotel, $175 a night, $350 for 2 nights · 5★ Fairmont Olympic Hotel, $361 a night, $722 for 2 nights
• Hotels in Seattle for these nights (Apr 15–18, 2027 · 3 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $101 a night, $304 for 3 nights · 4★ Graduate by Hilton Seattle, $171 a night, $514 for 3 nights · 5★ Fairmont Olympic Hotel, $361 a night, $1,083 for 3 nights
• Hotels in Seattle for these nights (Apr 15–19, 2027 · 4 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $97 a night, $387 for 4 nights · 4★ Graduate by Hilton Seattle, $164 a night, $657 for 4 nights · 5★ Fairmont Olympic Hotel, $354 a night, $1,415 for 4 nights
• Hotels in Seattle for these nights (Apr 15–20, 2027 · 5 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $99 a night, $494 for 5 nights · 4★ Graduate by Hilton Seattle, $160 a night, $798 for 5 nights · 5★ Fairmont Olympic Hotel, $361 a night, $1,805 for 5 nights
• Hotels in Seattle for these nights (Apr 15–21, 2027 · 6 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $102 a night, $614 for 6 nights · 4★ Graduate by Hilton Seattle, $158 a night, $945 for 6 nights · 5★ Fairmont Olympic Hotel, $366 a night, $2,195 for 6 nights
• Hotels in Seattle for these nights (Apr 15–22, 2027 · 7 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $103 a night, $723 for 7 nights · 4★ Graduate by Hilton Seattle, $158 a night, $1,109 for 7 nights · 5★ Fairmont Olympic Hotel, $369 a night, $2,585 for 7 nights
• Hotels in Seattle for these nights (Apr 15–23, 2027 · 8 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $103 a night, $825 for 8 nights · 4★ Graduate by Hilton Seattle, $163 a night, $1,302 for 8 nights · 5★ Fairmont Olympic Hotel, $368 a night, $2,946 for 8 nights
• Hotels in Seattle for these nights (Apr 15–24, 2027 · 9 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $103 a night, $927 for 9 nights · 4★ Mayflower Park Hotel, $166 a night, $1,490 for 9 nights · 5★ Fairmont Olympic Hotel, $367 a night, $3,307 for 9 nights
• Hotels in Seattle for these nights (Apr 15–25, 2027 · 10 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $103 a night, $1,029 for 10 nights · 4★ Mayflower Park Hotel, $168 a night, $1,684 for 10 nights · 5★ Fairmont Olympic Hotel, $367 a night, $3,668 for 10 nights
• Hotels in Seattle for these nights (Apr 15–26, 2027 · 11 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $101 a night, $1,115 for 11 nights · 4★ Mayflower Park Hotel, $167 a night, $1,840 for 11 nights · 5★ Fairmont Olympic Hotel, $364 a night, $4,000 for 11 nights
• Hotels in Seattle for these nights (Apr 15–27, 2027 · 12 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $102 a night, $1,222 for 12 nights · 4★ Mayflower Park Hotel, $167 a night, $2,001 for 12 nights · 5★ Fairmont Olympic Hotel, $365 a night, $4,385 for 12 nights
• Hotels in Seattle for these nights (Apr 15–28, 2027 · 13 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $103 a night, $1,342 for 13 nights · 4★ Mayflower Park Hotel, $165 a night, $2,149 for 13 nights · 5★ Fairmont Olympic Hotel, $368 a night, $4,778 for 13 nights
• Hotels in Seattle for these nights (Apr 15–29, 2027 · 14 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $104 a night, $1,458 for 14 nights · 4★ Mayflower Park Hotel, $165 a night, $2,304 for 14 nights · 5★ Fairmont Olympic Hotel, $369 a night, $5,168 for 14 nights

All hotels in Seattle

Route overview: Denver to Seattle (SEA) flight deals

2027-04-15 · one way · Axel-exclusive $140

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.

2027-04-15 · one way · Axel-exclusive $185

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.

2027-04-15 → 2027-04-16 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-16 13:24:00 → DEN 2027-04-16 17:13:00; nonstop; 169 minutes. Local airport times.

2027-04-15 → 2027-04-16 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-04-16 13:55:00 → DEN 2027-04-16 17:30:00; nonstop; 155 minutes. Local airport times.

2027-04-15 → 2027-04-17 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-17 13:37:00 → DEN 2027-04-17 17:26:00; nonstop; 169 minutes. Local airport times.

2027-04-15 → 2027-04-17 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-04-17 14:30:00 → DEN 2027-04-17 17:55:00; nonstop; 145 minutes. Local airport times.

2027-04-15 → 2027-04-18 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-18 16:37:00 → DEN 2027-04-18 20:25:00; nonstop; 168 minutes. Local airport times.

2027-04-15 → 2027-04-18 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-04-18 14:30:00 → DEN 2027-04-18 17:55:00; nonstop; 145 minutes. Local airport times.

2027-04-15 → 2027-04-19 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-19 13:37:00 → DEN 2027-04-19 17:26:00; nonstop; 169 minutes. Local airport times.

2027-04-15 → 2027-04-19 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN4956: SEA 2027-04-19 06:15:00 → DEN 2027-04-19 09:45:00; nonstop; 150 minutes. Local airport times.

2027-04-15 → 2027-04-21 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-21 16:37:00 → DEN 2027-04-21 20:25:00; nonstop; 168 minutes. Local airport times.

2027-04-15 → 2027-04-21 · Axel-exclusive $370

• Alaska Airlines AS493: DEN 2027-04-15 15:22:00 → SEA 2027-04-15 17:31:00; nonstop; 189 minutes. Local airport times.
• Alaska Airlines AS421: SEA 2027-04-21 13:50:00 → DEN 2027-04-21 17:30:00; nonstop; 160 minutes. Local airport times.

2027-04-15 → 2027-04-22 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-22 13:24:00 → DEN 2027-04-22 17:13:00; nonstop; 169 minutes. Local airport times.

2027-04-15 → 2027-04-22 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2027-04-22 09:25:00 → DEN 2027-04-22 13:00:00; nonstop; 155 minutes. Local airport times.

2027-04-15 → 2027-04-23 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-23 13:24:00 → DEN 2027-04-23 17:13:00; nonstop; 169 minutes. Local airport times.

2027-04-15 → 2027-04-23 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-04-23 13:55:00 → DEN 2027-04-23 17:30:00; nonstop; 155 minutes. Local airport times.

2027-04-15 → 2027-04-25 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-25 16:37:00 → DEN 2027-04-25 20:25:00; nonstop; 168 minutes. Local airport times.

2027-04-15 → 2027-04-25 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-04-25 14:30:00 → DEN 2027-04-25 17:55:00; nonstop; 145 minutes. Local airport times.

2027-04-15 → 2027-04-26 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-26 13:37:00 → DEN 2027-04-26 17:26:00; nonstop; 169 minutes. Local airport times.

2027-04-15 → 2027-04-26 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN4956: SEA 2027-04-26 06:15:00 → DEN 2027-04-26 09:45:00; nonstop; 150 minutes. Local airport times.

2027-04-15 → 2027-04-27 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-27 13:24:00 → DEN 2027-04-27 17:13:00; nonstop; 169 minutes. Local airport times.

2027-04-15 → 2027-04-27 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2027-04-27 09:25:00 → DEN 2027-04-27 13:00:00; nonstop; 155 minutes. Local airport times.

2027-04-15 → 2027-04-29 · Axel-exclusive $250

• Frontier Airlines F92015 / F92407: DEN 2027-04-15 06:25:00 → SEA 2027-04-15 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-04-15 06:25:00 → LAS 2027-04-15 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-04-15 09:29:00 → SEA 2027-04-15 12:27:00.
• Frontier Airlines F91916: SEA 2027-04-29 13:24:00 → DEN 2027-04-29 17:13:00; nonstop; 169 minutes. Local airport times.

2027-04-15 → 2027-04-29 · Axel-exclusive $360

• Southwest Airlines WN3141: DEN 2027-04-15 20:55:00 → SEA 2027-04-15 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2027-04-29 09:25:00 → DEN 2027-04-29 13:00:00; nonstop; 155 minutes. Local airport times.

Explore this route

• All dates for this route
• Apr 14, 2027 · Return options
• Apr 16, 2027 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Denver (DEN) to Seattle (SEA) · Apr 15, 2027 · choose your return date: 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 row is one exact trip for this departure (both dates with the year, the total and its displayed check date); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: Choose travelers and dates prices the requested trip.
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• 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.

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