AirSource

Flights San Francisco → Washington — September 11, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Friday, September 11, 2026 on the San Francisco–Washington route: 1 stop itinerary (2 flights) via Denver International (DEN), from San Francisco International (SFO) to Washington Reagan National (DCA), first flight Frontier Airlines F91230, departs 6:04 AM, arrives 4:59 PM, total travel time 7h 55m including layovers, flight time 6h 18m (layovers excluded), $238 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 9, 2026 and read by AirSource on September 10, 2026, 20:48 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Alaska Airlines AS8, from San Francisco International (SFO) to Washington Reagan National (DCA), departs 9:39 AM, arrives 5:59 PM, direct, 5h 20m, $518 per person.

Lowest price observed in the available data

1-stop itinerary (2 flights)

via Denver International (DEN) · first flight Frontier Airlines F91230

1 stop
Fri, Sep 11
San Francisco International (SFO)
7h 55m
1 stop
Fri, Sep 11
Washington Reagan National (DCA)
First flight
Frontier Airlines F91230 (1st of 2 flights)
Connecting flights
Operated after the layover in Denver International (DEN); airline and flight number are not provided by Aviasales in this record: see them on the booking site.
Departure
San Francisco International (SFO) · September 11, 2026 · local time (UTC-7)
Final arrival
Washington Reagan National (DCA) · September 11, 2026 · local time (UTC-4)
Stops
1 stop · in Denver International (DEN)
Total travel time
7h 55m (layovers included)
Flight time
6h 18m (layovers excluded)
Layover time
1h 37m
Carry-on bag
not included (personal item only)
Checked bag
not included
Changes
not allowed
Refund
non-refundable
Last observed price
$238 per person, one way
Observed
Price and fare conditions found in an Aviasales search on · read by AirSource on
Last observed price
$238
per person, one way
Check the current price and book

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Price not guaranteed: it is confirmed on Aviasales at booking time. How it works

Cheapest direct flight observed

Alaska Airlines AS8

Direct · San Francisco International (SFO) → Washington Reagan National (DCA)

Direct
Fri, Sep 11
San Francisco International (SFO)
5h 20m
direct
Fri, Sep 11
Washington Reagan National (DCA)
Airline
Alaska Airlines (AS)
Flight
AS8
Departure
San Francisco International (SFO) · September 11, 2026 · local time (UTC-7)
Arrival
Washington Reagan National (DCA) · September 11, 2026 · local time (UTC-4)
Stops
Direct (no plane change, as stated by the source; it can include a stop)
Duration
5h 20m
Last observed price
$518 per person, one way
Observed
Price and fare conditions found in an Aviasales search on · read by AirSource on
Last observed price
$518
per person, one way
Check the current price and book

Affiliate link. Booking, payment and support are handled by the seller you choose on Aviasales.

Price not guaranteed: it is confirmed on Aviasales at booking time. How it works

Looking for other times? All San Francisco–Washington flights on September 11, 2026 on Aviasales.

Nearby dates