Travel with Axel,
get the best price.

Route overview: Chicago to Seattle (SEA) flight deals

Chicago → Seattle

Dec 2, 2026 · return Dec 4, 2026

MDW → SEA1 adulteconomyRound trip

8 flight options · 2 airlines

Nonstop flights

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
10:10 amMDW
4h 40m
Nonstop
12:50 pmSEA
Southwest Airlines
6:30 amSEA
3h 55m
Nonstop
12:25 pmMDW

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
8:45 pmMDW
4h 50m
Nonstop
11:35 pmSEA
Southwest Airlines
6:30 amSEA
3h 55m
Nonstop
12:25 pmMDW

Round-trip total · 1 adult · Taxes included

One-stop flights

Wed, Dec 2 – Fri, Dec 4

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

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
10:35 amMDW
4h 40m
Nonstop
1:15 pmSEA
Southwest Airlines
1:35 pmSEA
5h 55m
DEN · 1h
9:30 pmMDW

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
6:05 pmMDW
8h 55m
PHX · 1h 45m
1:00 am+1SEA
Southwest Airlines
6:30 amSEA
3h 55m
Nonstop
12:25 pmMDW

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
6:00 amMDW
9h
SAN · 1h 15m
1:00 pmSEA
Southwest Airlines
6:30 amSEA
3h 55m
Nonstop
12:25 pmMDW

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
10:50 amMDW
9h
DEN · 3h 10m
5:50 pmSEA
Southwest Airlines
6:30 amSEA
3h 55m
Nonstop
12:25 pmMDW

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

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.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Southwest Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeDec 1, 2026 → Dec 3, 2026Dec 3, 2026 → Dec 5, 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.

Route overview: Chicago to Seattle (SEA) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-02 → 2026-12-04Southwest AirlinesWN1597 / WN1550$290.002026-10-29T01:29:13Z
2026-12-02 → 2026-12-04Delta Air LinesDL5469 + DL877 / DL536 + DL4714$330.002026-10-29T01:29:13Z
2026-12-02 → 2026-12-04Southwest AirlinesWN3032 / WN1550$290.002026-10-29T01:29:13Z
2026-12-02 → 2026-12-04Southwest AirlinesWN1597 / WN3823 + WN776$282.502026-10-29T01:29:13Z
2026-12-02 → 2026-12-04Southwest AirlinesWN2998 + WN2455 / WN1550$282.502026-10-29T01:29:13Z
2026-12-02 → 2026-12-04Southwest AirlinesWN3020 + WN547 / WN1550$282.502026-10-29T01:29:13Z
2026-12-02 → 2026-12-04Southwest AirlinesWN120 + WN244 / WN1550$282.502026-10-29T01:29:13Z
2026-12-02 → 2026-12-04Delta Air LinesDL4711 + DL728 / DL536 + DL4714$330.002026-10-29T01:29:13Z

2026-12-02 → 2026-12-04 · $290.00

  • Southwest Airlines WN1597: MDW 2026-12-02 10:10:00 → SEA 2026-12-02 12:50:00; nonstop; 280 minutes. Local airport times.
  • Southwest Airlines WN1550: SEA 2026-12-04 06:30:00 → MDW 2026-12-04 12:25:00; nonstop; 235 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $330.00

  • Delta Air Lines DL5469 / DL877: MDW 2026-12-02 10:24:00 → SEA 2026-12-02 16:53:00; 1 stop(s) via MSP; 509 minutes. Local airport times.
    • DL5469: MDW 2026-12-02 10:24:00 → MSP 2026-12-02 12:09:00; layover at MSP: 170 minutes.
    • DL877: MSP 2026-12-02 14:59:00 → SEA 2026-12-02 16:53:00.
  • Delta Air Lines DL536 / DL4714: SEA 2026-12-04 08:30:00 → MDW 2026-12-04 16:39:00; 1 stop(s) via MSP; 369 minutes. Local airport times.
    • DL536: SEA 2026-12-04 08:30:00 → MSP 2026-12-04 13:48:00; layover at MSP: 72 minutes.
    • DL4714: MSP 2026-12-04 15:00:00 → MDW 2026-12-04 16:39:00.

2026-12-02 → 2026-12-04 · $290.00

  • Southwest Airlines WN3032: MDW 2026-12-02 20:45:00 → SEA 2026-12-02 23:35:00; nonstop; 290 minutes. Local airport times.
  • Southwest Airlines WN1550: SEA 2026-12-04 06:30:00 → MDW 2026-12-04 12:25:00; nonstop; 235 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $282.50

  • Southwest Airlines WN1597: MDW 2026-12-02 10:35:00 → SEA 2026-12-02 13:15:00; nonstop; 280 minutes. Local airport times.
  • Southwest Airlines WN3823 / WN776: SEA 2026-12-04 13:35:00 → MDW 2026-12-04 21:30:00; 1 stop(s) via DEN; 355 minutes. Local airport times.
    • WN3823: SEA 2026-12-04 13:35:00 → DEN 2026-12-04 17:05:00; layover at DEN: 60 minutes.
    • WN776: DEN 2026-12-04 18:05:00 → MDW 2026-12-04 21:30:00.

2026-12-02 → 2026-12-04 · $282.50

  • Southwest Airlines WN2998 / WN2455: MDW 2026-12-02 18:05:00 → SEA 2026-12-03 01:00:00; 1 stop(s) via PHX; 535 minutes. Local airport times.
    • WN2998: MDW 2026-12-02 18:05:00 → PHX 2026-12-02 21:00:00; layover at PHX: 105 minutes.
    • WN2455: PHX 2026-12-02 22:45:00 → SEA 2026-12-03 01:00:00.
  • Southwest Airlines WN1550: SEA 2026-12-04 06:30:00 → MDW 2026-12-04 12:25:00; nonstop; 235 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $282.50

  • Southwest Airlines WN3020 / WN547: MDW 2026-12-02 06:00:00 → SEA 2026-12-02 13:00:00; 1 stop(s) via SAN; 540 minutes. Local airport times.
    • WN3020: MDW 2026-12-02 06:00:00 → SAN 2026-12-02 08:30:00; layover at SAN: 75 minutes.
    • WN547: SAN 2026-12-02 09:45:00 → SEA 2026-12-02 13:00:00.
  • Southwest Airlines WN1550: SEA 2026-12-04 06:30:00 → MDW 2026-12-04 12:25:00; nonstop; 235 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $282.50

  • Southwest Airlines WN120 / WN244: MDW 2026-12-02 10:50:00 → SEA 2026-12-02 17:50:00; 1 stop(s) via DEN; 540 minutes. Local airport times.
    • WN120: MDW 2026-12-02 10:50:00 → DEN 2026-12-02 12:30:00; layover at DEN: 190 minutes.
    • WN244: DEN 2026-12-02 15:40:00 → SEA 2026-12-02 17:50:00.
  • Southwest Airlines WN1550: SEA 2026-12-04 06:30:00 → MDW 2026-12-04 12:25:00; nonstop; 235 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $330.00

  • Delta Air Lines DL4711 / DL728: MDW 2026-12-02 09:30:00 → SEA 2026-12-02 14:55:00; 1 stop(s) via DTW; 445 minutes. Local airport times.
    • DL4711: MDW 2026-12-02 09:30:00 → DTW 2026-12-02 11:45:00; layover at DTW: 68 minutes.
    • DL728: DTW 2026-12-02 12:53:00 → SEA 2026-12-02 14:55:00.
  • Delta Air Lines DL536 / DL4714: SEA 2026-12-04 08:30:00 → MDW 2026-12-04 16:39:00; 1 stop(s) via MSP; 369 minutes. Local airport times.
    • DL536: SEA 2026-12-04 08:30:00 → MSP 2026-12-04 13:48:00; layover at MSP: 72 minutes.
    • DL4714: MSP 2026-12-04 15:00:00 → MDW 2026-12-04 16:39:00.

Explore this route