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Route overview: Chicago to Seattle (SEA) flight deals

Chicago → Seattle

Dec 13, 2026 · return Dec 15, 2026

MDW → SEA1 adulteconomyRound trip

8 flight options · 2 airlines

Nonstop flights

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
10:35 amMDW
4h 40m
Nonstop
1:15 pmSEA
Southwest Airlines
12:15 amSEA
3h 50m
Nonstop
6:05 amMDW

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
10:55 pmMDW
4h 45m
Nonstop
1:40 am+1SEA
Southwest Airlines
12:15 amSEA
3h 50m
Nonstop
6:05 amMDW

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Tue, Dec 15

Delta Air Lines
10:24 amMDW
8h 29m
MSP · 2h 50m
4:53 pmSEA
Delta Air Lines
8:30 amSEA
6h 9m
MSP · 1h 12m
4:39 pmMDW

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
5:50 amMDW
9h 10m
LAS · 2h 15m
1:00 pmSEA
Southwest Airlines
12:15 amSEA
3h 50m
Nonstop
6:05 amMDW

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
10:50 amMDW
9h
DEN · 3h 10m
5:50 pmSEA
Southwest Airlines
12:15 amSEA
3h 50m
Nonstop
6:05 amMDW

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
6:05 pmMDW
8h 55m
PHX · 1h 45m
1:00 am+1SEA
Southwest Airlines
12:15 amSEA
3h 50m
Nonstop
6:05 amMDW

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
6:00 amMDW
9h
SAN · 1h 15m
1:00 pmSEA
Southwest Airlines
12:15 amSEA
3h 50m
Nonstop
6:05 amMDW

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Delta Air Lines
9:30 amMDW
7h 25m
DTW · 1h 8m
2:55 pmSEA
Delta Air Lines
8:30 amSEA
6h 9m
MSP · 1h 12m
4:39 pmMDW

Round-trip total · 1 adult · Taxes included

Make this trip yours

MDW ⇄ SEA

Economy

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

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Explore this route

All dates for this routeDec 12, 2026 → Dec 14, 2026Dec 14, 2026 → Dec 16, 2026
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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

Route overview: Chicago to Seattle (SEA) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-13 → 2026-12-15Southwest AirlinesWN1597 / WN4975$290.002026-10-29T01:29:13Z
2026-12-13 → 2026-12-15Delta Air LinesDL5469 + DL877 / DL536 + DL4714$330.002026-10-29T01:29:13Z
2026-12-13 → 2026-12-15Southwest AirlinesWN2100 / WN4975$290.002026-10-29T01:29:13Z
2026-12-13 → 2026-12-15Southwest AirlinesWN2691 + WN948 / WN4975$282.502026-10-29T01:29:13Z
2026-12-13 → 2026-12-15Southwest AirlinesWN120 + WN244 / WN4975$282.502026-10-29T01:29:13Z
2026-12-13 → 2026-12-15Southwest AirlinesWN2998 + WN2455 / WN4975$282.502026-10-29T01:29:13Z
2026-12-13 → 2026-12-15Southwest AirlinesWN3020 + WN547 / WN4975$282.502026-10-29T01:29:13Z
2026-12-13 → 2026-12-15Delta Air LinesDL4711 + DL728 / DL536 + DL4714$330.002026-10-29T01:29:13Z

2026-12-13 → 2026-12-15 · $290.00

  • Southwest Airlines WN1597: MDW 2026-12-13 10:35:00 → SEA 2026-12-13 13:15:00; nonstop; 280 minutes. Local airport times.
  • Southwest Airlines WN4975: SEA 2026-12-15 00:15:00 → MDW 2026-12-15 06:05:00; nonstop; 230 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $330.00

  • Delta Air Lines DL5469 / DL877: MDW 2026-12-13 10:24:00 → SEA 2026-12-13 16:53:00; 1 stop(s) via MSP; 509 minutes. Local airport times.
    • DL5469: MDW 2026-12-13 10:24:00 → MSP 2026-12-13 12:09:00; layover at MSP: 170 minutes.
    • DL877: MSP 2026-12-13 14:59:00 → SEA 2026-12-13 16:53:00.
  • Delta Air Lines DL536 / DL4714: SEA 2026-12-15 08:30:00 → MDW 2026-12-15 16:39:00; 1 stop(s) via MSP; 369 minutes. Local airport times.
    • DL536: SEA 2026-12-15 08:30:00 → MSP 2026-12-15 13:48:00; layover at MSP: 72 minutes.
    • DL4714: MSP 2026-12-15 15:00:00 → MDW 2026-12-15 16:39:00.

2026-12-13 → 2026-12-15 · $290.00

  • Southwest Airlines WN2100: MDW 2026-12-13 22:55:00 → SEA 2026-12-14 01:40:00; nonstop; 285 minutes. Local airport times.
  • Southwest Airlines WN4975: SEA 2026-12-15 00:15:00 → MDW 2026-12-15 06:05:00; nonstop; 230 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $282.50

  • Southwest Airlines WN2691 / WN948: MDW 2026-12-13 05:50:00 → SEA 2026-12-13 13:00:00; 1 stop(s) via LAS; 550 minutes. Local airport times.
    • WN2691: MDW 2026-12-13 05:50:00 → LAS 2026-12-13 07:45:00; layover at LAS: 135 minutes.
    • WN948: LAS 2026-12-13 10:00:00 → SEA 2026-12-13 13:00:00.
  • Southwest Airlines WN4975: SEA 2026-12-15 00:15:00 → MDW 2026-12-15 06:05:00; nonstop; 230 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $282.50

  • Southwest Airlines WN120 / WN244: MDW 2026-12-13 10:50:00 → SEA 2026-12-13 17:50:00; 1 stop(s) via DEN; 540 minutes. Local airport times.
    • WN120: MDW 2026-12-13 10:50:00 → DEN 2026-12-13 12:30:00; layover at DEN: 190 minutes.
    • WN244: DEN 2026-12-13 15:40:00 → SEA 2026-12-13 17:50:00.
  • Southwest Airlines WN4975: SEA 2026-12-15 00:15:00 → MDW 2026-12-15 06:05:00; nonstop; 230 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $282.50

  • Southwest Airlines WN2998 / WN2455: MDW 2026-12-13 18:05:00 → SEA 2026-12-14 01:00:00; 1 stop(s) via PHX; 535 minutes. Local airport times.
    • WN2998: MDW 2026-12-13 18:05:00 → PHX 2026-12-13 21:00:00; layover at PHX: 105 minutes.
    • WN2455: PHX 2026-12-13 22:45:00 → SEA 2026-12-14 01:00:00.
  • Southwest Airlines WN4975: SEA 2026-12-15 00:15:00 → MDW 2026-12-15 06:05:00; nonstop; 230 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $282.50

  • Southwest Airlines WN3020 / WN547: MDW 2026-12-13 06:00:00 → SEA 2026-12-13 13:00:00; 1 stop(s) via SAN; 540 minutes. Local airport times.
    • WN3020: MDW 2026-12-13 06:00:00 → SAN 2026-12-13 08:30:00; layover at SAN: 75 minutes.
    • WN547: SAN 2026-12-13 09:45:00 → SEA 2026-12-13 13:00:00.
  • Southwest Airlines WN4975: SEA 2026-12-15 00:15:00 → MDW 2026-12-15 06:05:00; nonstop; 230 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $330.00

  • Delta Air Lines DL4711 / DL728: MDW 2026-12-13 09:30:00 → SEA 2026-12-13 14:55:00; 1 stop(s) via DTW; 445 minutes. Local airport times.
    • DL4711: MDW 2026-12-13 09:30:00 → DTW 2026-12-13 11:45:00; layover at DTW: 68 minutes.
    • DL728: DTW 2026-12-13 12:53:00 → SEA 2026-12-13 14:55:00.
  • Delta Air Lines DL536 / DL4714: SEA 2026-12-15 08:30:00 → MDW 2026-12-15 16:39:00; 1 stop(s) via MSP; 369 minutes. Local airport times.
    • DL536: SEA 2026-12-15 08:30:00 → MSP 2026-12-15 13:48:00; layover at MSP: 72 minutes.
    • DL4714: MSP 2026-12-15 15:00:00 → MDW 2026-12-15 16:39:00.

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For AI assistants

  • This page: Chicago (MDW) to Seattle (SEA) · Dec 13, 2026 · return Dec 15, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • 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 Chicago 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.