Southwest Airlines WN3556 San Francisco International (SFO) → Chicago Midway (MDW) — September 12, 2026

One way · Economy · 1 adult · price per person

Last observed price for Saturday, September 12, 2026: Southwest Airlines WN3556, from San Francisco International (SFO) to Chicago Midway (MDW), departs 11:40 PM, arrives 5:50 AM the next day, direct, 4h 10m, $264 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 10, 2026 and read by AirSource on September 10, 2026, 20:48 UTC: it is not guaranteed and is confirmed on Aviasales at booking time.

Observation for flight WN3556 on September 12, 2026

Southwest Airlines WN3556

Direct · San Francisco International (SFO) → Chicago Midway (MDW)

Direct

11:40 PM

Sat, Sep 12

San Francisco International (SFO)

4h 10m

direct

5:50 AM⁺¹

Sun, Sep 13

Chicago Midway (MDW)

Airline: Southwest Airlines (WN)
Flight: WN3556
Departure: San Francisco International (SFO) · September 12, 2026 · 11:40 PM local time (UTC-7)
Arrival: Chicago Midway (MDW) · September 13, 2026 · 5:50 AM local time (UTC-5) · next day
Stops: Direct (no plane change, as stated by the source; it can include a stop)
Duration: 4h 10m
Carry-on bag: not included (personal item only)
Checked bag: not included
Changes: not allowed
Refund: non-refundable
Last observed price: $264 per person, one way
Observed: Price and fare conditions found in an Aviasales search on September 10, 2026 · read by AirSource on September 10, 2026, 20:48 UTC