Denver (DEN) to Seattle (SEA), Mar 16, 2027: round trips from $270, one way from $140

Denver (DEN) to Seattle (SEA), Mar 16, 2027: round trips from $270, one way from $140 on Axel, checked Nov 14, 2026. Lowest published fares: $270 round trip, Axel-exclusive, Southwest Airlines, nonstop, Mar 16–18, 2027; $140 one way, Axel-exclusive, Southwest Airlines, nonstop, Mar 16, 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 (Mar 16–17, 2027 · 1 night · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $123 a night · 4★ Hotel Sorrento, $134 a night · 5★ Fairmont Olympic Hotel, $316 a night
• Hotels in Seattle for these nights (Mar 16–18, 2027 · 2 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $118 a night, $235 for 2 nights · 4★ Hotel Sorrento, $139 a night, $278 for 2 nights · 5★ Fairmont Olympic Hotel, $314 a night, $627 for 2 nights
• Hotels in Seattle for these nights (Mar 16–19, 2027 · 3 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $112 a night, $335 for 3 nights · 4★ citizenM Seattle Pioneer Square, $149 a night, $447 for 3 nights · 5★ Fairmont Olympic Hotel, $311 a night, $934 for 3 nights
• Hotels in Seattle for these nights (Mar 16–20, 2027 · 4 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $109 a night, $437 for 4 nights · 4★ citizenM Seattle Pioneer Square, $151 a night, $602 for 4 nights · 5★ Fairmont Olympic Hotel, $311 a night, $1,245 for 4 nights
• Hotels in Seattle for these nights (Mar 16–21, 2027 · 5 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $107 a night, $535 for 5 nights · 4★ citizenM Seattle Pioneer Square, $156 a night, $781 for 5 nights · 5★ Fairmont Olympic Hotel, $311 a night, $1,553 for 5 nights
• Hotels in Seattle for these nights (Mar 16–22, 2027 · 6 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $104 a night, $621 for 6 nights · 4★ citizenM Seattle Pioneer Square, $153 a night, $918 for 6 nights · 5★ Fairmont Olympic Hotel, $306 a night, $1,837 for 6 nights
• Hotels in Seattle for these nights (Mar 16–23, 2027 · 7 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $104 a night, $728 for 7 nights · 4★ citizenM Seattle Pioneer Square, $150 a night, $1,047 for 7 nights · 5★ Fairmont Olympic Hotel, $306 a night, $2,139 for 7 nights
• Hotels in Seattle for these nights (Mar 16–24, 2027 · 8 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $106 a night, $848 for 8 nights · 4★ citizenM Seattle Pioneer Square, $149 a night, $1,192 for 8 nights · 5★ Fairmont Olympic Hotel, $307 a night, $2,455 for 8 nights
• Hotels in Seattle for these nights (Mar 16–25, 2027 · 9 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $107 a night, $959 for 9 nights · 4★ citizenM Seattle Pioneer Square, $148 a night, $1,332 for 9 nights · 5★ Fairmont Olympic Hotel, $310 a night, $2,786 for 9 nights
• Hotels in Seattle for these nights (Mar 16–26, 2027 · 10 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $106 a night, $1,059 for 10 nights · 4★ citizenM Seattle Pioneer Square, $148 a night, $1,480 for 10 nights · 5★ Fairmont Olympic Hotel, $309 a night, $3,088 for 10 nights
• Hotels in Seattle for these nights (Mar 16–27, 2027 · 11 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $106 a night, $1,163 for 11 nights · 4★ Graduate by Hilton Seattle, $149 a night, $1,643 for 11 nights · 5★ Fairmont Olympic Hotel, $309 a night, $3,399 for 11 nights
• Hotels in Seattle for these nights (Mar 16–28, 2027 · 12 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $105 a night, $1,265 for 12 nights · 4★ Graduate by Hilton Seattle, $149 a night, $1,789 for 12 nights · 5★ Fairmont Olympic Hotel, $309 a night, $3,710 for 12 nights
• Hotels in Seattle for these nights (Mar 16–29, 2027 · 13 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $104 a night, $1,351 for 13 nights · 4★ Graduate by Hilton Seattle, $148 a night, $1,925 for 13 nights · 5★ Fairmont Olympic Hotel, $307 a night, $3,993 for 13 nights
• Hotels in Seattle for these nights (Mar 16–30, 2027 · 14 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $104 a night, $1,456 for 14 nights · 4★ Graduate by Hilton Seattle, $147 a night, $2,061 for 14 nights · 5★ Fairmont Olympic Hotel, $307 a night, $4,295 for 14 nights

All hotels in Seattle

Route overview: Denver to Seattle (SEA) flight deals

2027-03-16 · one way · Axel-exclusive $140

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.

2027-03-16 · one way · Axel-exclusive $145

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.

2027-03-16 → 2027-03-17 · Axel-exclusive $280

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS421: SEA 2027-03-17 13:50:00 → DEN 2027-03-17 17:30:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-17 · Axel-exclusive $285

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3833 / WN2542: SEA 2027-03-17 05:15:00 → DEN 2027-03-17 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
  • WN3833: SEA 2027-03-17 05:15:00 → SMF 2027-03-17 07:05:00; layover at SMF: 130 minutes.
  • WN2542: SMF 2027-03-17 09:15:00 → DEN 2027-03-17 12:30:00.

2027-03-16 → 2027-03-18 · Axel-exclusive $270

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2027-03-18 09:25:00 → DEN 2027-03-18 13:00:00; nonstop; 155 minutes. Local airport times.

2027-03-16 → 2027-03-18 · Axel-exclusive $280

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS421: SEA 2027-03-18 15:16:00 → DEN 2027-03-18 18:56:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-19 · Axel-exclusive $270

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-03-19 13:55:00 → DEN 2027-03-19 17:30:00; nonstop; 155 minutes. Local airport times.

2027-03-16 → 2027-03-19 · Axel-exclusive $280

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS310: SEA 2027-03-19 19:35:00 → DEN 2027-03-19 23:15:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-20 · Axel-exclusive $290

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-03-20 14:30:00 → DEN 2027-03-20 17:55:00; nonstop; 145 minutes. Local airport times.

2027-03-16 → 2027-03-20 · Axel-exclusive $301

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS310: SEA 2027-03-20 19:37:00 → DEN 2027-03-20 23:17:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-22 · Axel-exclusive $290

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN4956: SEA 2027-03-22 06:15:00 → DEN 2027-03-22 09:45:00; nonstop; 150 minutes. Local airport times.

2027-03-16 → 2027-03-22 · Axel-exclusive $301

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS421: SEA 2027-03-22 13:50:00 → DEN 2027-03-22 17:30:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-23 · Axel-exclusive $290

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2027-03-23 09:25:00 → DEN 2027-03-23 13:00:00; nonstop; 155 minutes. Local airport times.

2027-03-16 → 2027-03-23 · Axel-exclusive $301

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS310: SEA 2027-03-23 19:37:00 → DEN 2027-03-23 23:17:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-24 · Axel-exclusive $301

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS421: SEA 2027-03-24 13:50:00 → DEN 2027-03-24 17:30:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-24 · Axel-exclusive $308

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3833 / WN2542: SEA 2027-03-24 05:15:00 → DEN 2027-03-24 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
  • WN3833: SEA 2027-03-24 05:15:00 → SMF 2027-03-24 07:05:00; layover at SMF: 130 minutes.
  • WN2542: SMF 2027-03-24 09:15:00 → DEN 2027-03-24 12:30:00.

2027-03-16 → 2027-03-26 · Axel-exclusive $290

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-03-26 13:55:00 → DEN 2027-03-26 17:30:00; nonstop; 155 minutes. Local airport times.

2027-03-16 → 2027-03-26 · Axel-exclusive $301

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS310: SEA 2027-03-26 19:35:00 → DEN 2027-03-26 23:15:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-27 · Axel-exclusive $290

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-03-27 14:30:00 → DEN 2027-03-27 17:55:00; nonstop; 145 minutes. Local airport times.

2027-03-16 → 2027-03-27 · Axel-exclusive $301

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS310: SEA 2027-03-27 19:37:00 → DEN 2027-03-27 23:17:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-28 · Axel-exclusive $342

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2027-03-28 14:30:00 → DEN 2027-03-28 17:55:00; nonstop; 145 minutes. Local airport times.

2027-03-16 → 2027-03-28 · Axel-exclusive $353

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS421: SEA 2027-03-28 13:50:00 → DEN 2027-03-28 17:30:00; nonstop; 160 minutes. Local airport times.

2027-03-16 → 2027-03-30 · Axel-exclusive $315

• Southwest Airlines WN3141: DEN 2027-03-16 21:00:00 → SEA 2027-03-16 23:10:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2027-03-30 09:25:00 → DEN 2027-03-30 13:00:00; nonstop; 155 minutes. Local airport times.

2027-03-16 → 2027-03-30 · Axel-exclusive $325

• Alaska Airlines AS682: DEN 2027-03-16 12:15:00 → SEA 2027-03-16 14:23:00; nonstop; 188 minutes. Local airport times.
• Alaska Airlines AS310: SEA 2027-03-30 19:37:00 → DEN 2027-03-30 23:17:00; nonstop; 160 minutes. Local airport times.

Explore this route

• All dates for this route
• Mar 15, 2027 · Return options
• Mar 17, 2027 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Denver (DEN) to Seattle (SEA) · Mar 16, 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.
• 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