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Flights from Washington D.C. to San Antonio

Find flight deals from Washington D.C. to San Antonio for the next 3 months. Book one way flights from $126 or round trip flights from $304.

      • Cheapest nonstop
        DCA 6:16 PM
        3h 41m
        Nonstop
        SAT 8:57 PM
        Washington D.C. - San Antonio | Sat, Aug 15 | American Airlines
        SAT 6:11 AM
        3h 29m
        Nonstop
        DCA 10:40 AM
        San Antonio - Washington D.C. | Tue, Aug 18 | American Airlines
        $304 $344
        12% off
        12% off
        $344 $304
      • DCA 7:00 AM
        12h 54m
        1 stop
        SAT 6:54 PM
        Washington D.C. - San Antonio | Sat, Aug 15 | Frontier Airlines
        SAT 7:49 PM
        20h 10m
        1 stop
        DCA 4:59 PM
        San Antonio - Washington D.C. | Tue, Aug 18 | Frontier Airlines
        $247 $344
        28% off
        28% off
        $344 $247
      • DCA 7:00 AM
        13h 31m
        1 stop
        SAT 7:31 PM
        Washington D.C. - San Antonio | Thu, Aug 27 | Frontier Airlines
        SAT 8:26 PM
        24h 33m
        1 stop
        DCA 9:59 PM
        San Antonio - Washington D.C. | Thu, Sep 3 | Frontier Airlines
        $251 $344
        27% off
        27% off
        $344 $251
      • IAD 9:50 AM
        11h 47m
        1 stop
        SAT 8:37 PM
        Washington D.C. - San Antonio | Wed, Aug 5 | Frontier Airlines
        SAT 7:49 PM
        16h 2m
        1 stop
        DCA 12:51 PM
        San Antonio - Washington D.C. | Sun, Aug 9 | Frontier Airlines
        $252
        27% off
        $344 $252
      • IAD 5:28 PM
        6h 53m
        1 stop
        SAT 11:21 PM
        Washington D.C. - San Antonio | Sun, Aug 2 | Delta Air Lines
        SAT 9:32 PM
        9h 48m
        1 stop
        IAD 8:20 AM
        San Antonio - Washington D.C. | Wed, Aug 5 | Frontier Airlines
        $256
        26% off
        $344 $256
      • DCA 7:00 AM
        13h 31m
        1 stop
        SAT 7:31 PM
        Washington D.C. - San Antonio | Wed, Aug 26 | Frontier Airlines
        SAT 8:26 PM
        19h 33m
        1 stop
        DCA 4:59 PM
        San Antonio - Washington D.C. | Sat, Aug 29 | Frontier Airlines
        $257
        25% off
        $344 $257
      • DCA 6:00 PM
        25h 44m
        1 stop
        SAT 6:44 PM
        Washington D.C. - San Antonio | Wed, Jul 29 | Frontier Airlines
        SAT 7:39 PM
        16h 12m
        1 stop
        DCA 12:51 PM
        San Antonio - Washington D.C. | Sat, Aug 1 | Frontier Airlines
        $261
        24% off
        $344 $261
      • DCA 7:00 AM
        12h 54m
        1 stop
        SAT 6:54 PM
        Washington D.C. - San Antonio | Thu, Aug 6 | Frontier Airlines
        SAT 7:49 PM
        16h 2m
        1 stop
        DCA 12:51 PM
        San Antonio - Washington D.C. | Sun, Aug 9 | Frontier Airlines
        $262
        24% off
        $344 $262
      • DCA 6:00 PM
        26h 31m
        1 stop
        SAT 7:31 PM
        Washington D.C. - San Antonio | Sat, Aug 22 | Frontier Airlines
        SAT 8:26 PM
        24h 33m
        1 stop
        DCA 9:59 PM
        San Antonio - Washington D.C. | Mon, Aug 24 | Frontier Airlines
        $263
        24% off
        $344 $263
      • DCA 6:59 AM
        5h 11m
        1 stop
        SAT 11:10 AM
        Washington D.C. - San Antonio | Thu, Aug 27 | Delta Air Lines
        SAT 8:26 PM
        24h 33m
        1 stop
        DCA 9:59 PM
        San Antonio - Washington D.C. | Thu, Sep 3 | Frontier Airlines
        $267
        22% off
        $344 $267
      • WAS 1:00 PM
        17h 25m
        1 stop
        SAT 2:00 PM
        Washington D.C. - San Antonio | Sun, Jul 19 | Normal Airline
        SAT 3:00 PM
        6h
        Nonstop
        WAS 4:00 PM
        San Antonio - Washington D.C. | Tue, Jul 21 | Normal Airline
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      • DCA 7:00 AM
        12h 54m
        1 stop
        SAT 6:54 PM
        Washington D.C. - San Antonio | Fri, Aug 14 | Frontier Airlines
        $126 $144
        13% off
        13% off
        $144 $126
      • DCA 7:00 AM
        13h 31m
        1 stop
        SAT 7:31 PM
        Washington D.C. - San Antonio | Fri, Aug 21 | Frontier Airlines
        $127 $144
        12% off
        12% off
        $144 $127
      • IAD 9:50 AM
        11h 47m
        1 stop
        SAT 8:37 PM
        Washington D.C. - San Antonio | Thu, Aug 13 | Frontier Airlines
        $128 $144
        11% off
        11% off
        $144 $128
      • WAS 1:00 PM
        17h 25m
        1 stop
        SAT 2:00 PM
        Washington D.C. - San Antonio | Sun, Jul 19 | Normal Airline
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Find cheap airlines flights from Washington D.C. to San Antonio

You can choose from 2 airlines that fly from Washington D.C. to San Antonio, including United Airlines, Frontier Airlines, Frontier Airlines has lowest fares on this route.
United Airlines logo United Airlines
Frontier Airlines logo Frontier Airlines
Airlines are determined based on actual purchased flight tickets from Washington D.C. to San Antonio according to previous 12 months data from Trip.com.

Flight Info | Washington D.C. to San Antonio

The distance between Washington D.C. and San Antonio is approximately 2,220.49 km. It takes around 4 hours 28 minutes on average to fly from Washington D.C. to San Antonio. Based on Trip.com's data travel demand peaks in July. The off-season for travel is September.

Cheapest one-way flight price$126
Cheapest round-trip ticket price$247
Off-season for travelSeptember
Peak season for travelJuly
Flight distance2,220.49 km
Average flight time4 hours 28 minutes
Popular airlineUnited Airlines
Flight statistics for the Washington D.C.–San Antonio route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Washington D.C. to San Antonio (WAS-SAT)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as $126 on Cheapest nonstop routes (e.g. DCA to SAT on Fri, Aug 14), while Frontier Airlines offers Cheapest nonstop round-trips from $247 departing on Sat, Aug 15 and returning on Tue, Aug 18.
  • At the moment, you can catch a nonstop flight from Washington D.C. to San Antonio with the following airlines, including: United Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 4 hours 28 minutes to fly from Washington D.C. (WAS) to San Antonio (SAT).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Washington D.C. to San Antonio is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 31 flight per week flying from Washington D.C. to San Antonio. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/M/T/W/T/F/S -- UA395 (16:16)
  • To find best deals on flights from Washington D.C. to San Antonio, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Aug 14, with one-way flights priced at just $126.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for San Antonio travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Washington D.C. to San Antonio is September, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Washington D.C. to San Antonio on July 27, 2026 with Frontier Airlines, with prices starting at $259.
  • You can land at any one of the following hubs in San Antonio, with Dulles International Airport to San Antonio International Airport (IAD-SAT) is by far the most common option on this route: San Antonio International Airport (SAT) Kelly Field Annex/Lackland Air Force Base (SKF).
  • The time difference between San Antonio and Washington D.C. is 1h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

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Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.