$144+ Cheap flights from Dulles Intl (IAD) to San Antonio (SAT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SAT
Nov 17 — Nov 241
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to San Antonio with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider ’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San Antonio are usually found in August or January, booked 31 days in advance, depart on a Thursday or Friday and return on a Thursday
Cheap flight deals from Dulles Intl to San Antonio
Cheapest
Best
Last-minute
One-way
Cheapest flights from Dulles Intl to San AntonioExplore the most affordable flight options available from Dulles Intl to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 18, 2026.
Explore the most affordable flight options available from Dulles Intl to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 18, 2026.
This Orbitz deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/238:20 pm -
1 stop25h 06m
Wed 12/309:07 pm -
1 stop10h 12m
Deal found 10/13![Frontier logo]()
$288
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:05 am -
1 stop8h 22m
Fri 11/136:30 pm -
1 stop5h 11m
Deal found 10/13![Delta logo]()
$289
This Trip.com deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:33 pm -
1 stop16h 46m
Mon 12/712:32 pm -
1 stop5h 59m
Deal found 10/15![Frontier logo]()
$290
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1610:10 am -
1 stop7h 08m
Tue 12/2212:25 pm -
Nonstop3h 10m
Deal found 10/14![United Airlines logo]()
$291
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:00 am -
1 stop8h 06m
Sat 1/97:05 am -
Nonstop3h 10m
Deal found 10/13![United Airlines logo]()
$294
This Cheapflightsfares deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:16 am -
1 stop24h 55m
Mon 11/2310:11 pm -
1 stop29h 59m
Deal found 10/15![Frontier logo]()
$296
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:38 pm -
1 stop5h 32m
Thu 11/57:00 am -
Nonstop3h 13m
Deal found 10/13![United Airlines logo]()
$298
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/125:55 pm -
Nonstop3h 54m
Mon 12/2112:25 pm -
Nonstop3h 10m
Deal found 10/14![United Airlines logo]()
$299
This Expedia deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:16 am -
1 stop24h 55m
Fri 11/2010:11 pm -
1 stop29h 59m
Deal found 10/15![Frontier logo]()
$300
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:30 am -
1 stop5h 36m
Mon 12/74:10 pm -
1 stop5h 32m
Deal found 10/14![United Airlines logo]()
$301
This Cheapflightsfares deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:00 am -
1 stop8h 52m
Mon 11/95:13 pm -
1 stop16h 08m
Deal found 10/14![Frontier logo]()
$305
Best flights from Dulles Intl to San AntonioDiscover carefully curated flight deals from Dulles Intl to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 18, 2026.
Discover carefully curated flight deals from Dulles Intl to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 18, 2026.
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/125:52 pm -
1 stop6h 12m
Mon 12/214:13 pm -
1 stop5h 28m
Deal found 10/14![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:30 am -
1 stop5h 33m
Mon 12/76:37 pm -
1 stop5h 04m
Deal found 10/14![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/58:22 am -
Nonstop4h 02m
Fri 2/1212:10 pm -
Nonstop3h 10m
Deal found 10/13![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/310:11 am -
1 stop8h 20m
Sun 12/66:37 pm -
1 stop5h 04m
Deal found 10/17![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/258:20 am -
Nonstop4h 02m
Tue 12/297:10 am -
Nonstop3h 10m
Deal found 10/17![United Airlines logo]()
$388
This Delta deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:16 pm -
1 stop6h 38m
Sun 11/296:30 pm -
1 stop5h 11m
Deal found 10/15![Delta logo]()
$419
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:00 am -
1 stop5h 51m
Fri 12/251:54 pm -
1 stop6h 20m
Deal found 10/15![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:30 pm -
Nonstop3h 54m
Sat 11/712:24 pm -
Nonstop3h 11m
Deal found 10/16![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:57 am -
1 stop5h 53m
Sun 11/15:15 am -
1 stop5h 19m
Deal found 10/13![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:03 pm -
1 stop5h 45m
Wed 11/45:15 am -
1 stop5h 19m
Deal found 10/15![Delta logo]()
$459
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/198:15 am -
Nonstop4h 02m
Fri 12/2511:50 am -
1 stop5h 46m
Deal found 10/14![United Airlines logo]()
$423
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:30 pm -
Nonstop3h 54m
Tue 11/37:00 am -
Nonstop3h 13m
Deal found 10/14![United Airlines logo]()
$439
Last-minute flights from Dulles Intl to San AntonioDiscover last-minute flight deals from Dulles Intl to San Antonio. Data last updated October 18, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to San Antonio. Data last updated October 18, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:00 am -
1 stop8h 52m
Mon 11/95:13 pm -
1 stop16h 08m
Deal found 10/14![Frontier logo]()
$305
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:38 pm -
1 stop5h 32m
Thu 11/57:00 am -
Nonstop3h 13m
Deal found 10/13![United Airlines logo]()
$298
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:38 pm -
1 stop5h 32m
Mon 11/94:19 pm -
1 stop5h 25m
Deal found 10/14![United Airlines logo]()
$315
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:30 pm -
Nonstop3h 54m
Sun 11/87:00 am -
Nonstop3h 13m
Deal found 10/13![United Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/103:00 pm -
1 stop8h 06m
Tue 11/175:30 am -
1 stop5h 07m
Deal found 10/13![Delta logo]()
$289
This Cheapflightsfares deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:16 am -
1 stop24h 55m
Mon 11/2310:11 pm -
1 stop29h 59m
Deal found 10/15![Frontier logo]()
$296
This Expedia deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:16 am -
1 stop24h 55m
Fri 11/2010:11 pm -
1 stop29h 59m
Deal found 10/15![Frontier logo]()
$300
This CheapOair deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:16 am -
1 stop24h 55m
Sun 11/2210:11 pm -
1 stop29h 59m
Deal found 10/16![Frontier logo]()
$310
This Cheapflightsfares deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:16 am -
1 stop24h 55m
Thu 11/264:03 pm -
1 stop11h 32m
Deal found 10/15![Frontier logo]()
$316
This Frontier deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/271:09 pm -
1 stop9h 07m
Mon 12/71:32 pm -
1 stop6h 57m
Deal found 10/13![Frontier logo]()
$313
One-way flights from Dulles Intl to San AntonioSearch for one-way flight options from Dulles Intl to San Antonio. Find affordable one-way fares based on user searches. Data last updated October 18, 2026.
Search for one-way flight options from Dulles Intl to San Antonio. Find affordable one-way fares based on user searches. Data last updated October 18, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1410:16 pm -
1 stop13h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Frontier logo]()
$144
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:05 am -
1 stop8h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Delta logo]()
$145
This Mytrip deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/109:23 pm -
1 stop15h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/241:09 pm -
1 stop9h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Frontier logo]()
$147
This Cheapflightsfares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:09 pm -
1 stop9h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/810:33 pm -
2 stops35h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/912:06 pm -
2 stops21h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Multiple Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:33 pm -
3 stops38h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Multiple Airlines logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/136:37 am -
2 stops27h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Multiple Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:07 pm -
2 stops15h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Multiple Airlines logo]()
$162
Find flight deals from Dulles Intl to San Antonio
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $288 (Orbitz) |
One-way from | $144 (Cheapflightsfares) |
Popular in | May |
Cheapest in | August |
Average price | $440 |
Good round-trip deal | $388 or less |
Good one-way deal | $268 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 18, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Antonio that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Tue 12/8
3:00 pm-10:19 pm
1 stop8h 19m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$145
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Thu 11/19
3:00 pm-10:06 pm
1 stop8h 06m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$145
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Thu 11/12
8:25 am-11:18 am
Nonstop3h 53m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$195
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Mon 1/4
1:00 pm-5:18 pm
1 stop5h 18m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$195
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Tue 12/1
5:00 pm-12:35 am
1 stop8h 35m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$224
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Wed 3/10
8:25 am-11:20 am
Nonstop3h 55m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$269
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Fri 11/20
8:25 am-11:18 am
Nonstop3h 53m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$279
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Thu 12/17
8:20 am-11:22 am
Nonstop4h 02m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$279
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Sat 12/12
5:52 pm-11:04 pm
1 stop6h 12m
San Antonio
Mon 12/21
4:13 pm-10:41 pm
1 stop5h 28m
$289
Washington, D.C.San Antonio
IAD Washington, D.C. Dulles Intl - SAT San Antonio
IADSAT
Washington, D.C. Dulles Intl
Fri 12/4
11:30 am-4:03 pm
1 stop5h 33m
San Antonio
Mon 12/7
6:37 pm-12:41 am
1 stop5h 04m
$289
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl to San Antonio
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to San Antonio in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Dulles Intl to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from Dulles Intl with our price prediction graph.
IAD-SAT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to San Antonio
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How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to San Antonio?
The best time to book flights from Washington, D.C. Dulles Intl Airport to San Antonio is 30 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to San Antonio?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Antonio (average of $328). Flying from Washington, D.C. Dulles Intl Airport to San Antonio in May is currently the most expensive (average of $479). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IAD to SAT?
Find hourly flight availability from Dulles Intl to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 18, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to San Antonio as you normally would.
What’s the top layover airport for flights from Washington, D.C. Dulles Intl Airport to San Antonio?
Share of 1-stop round-trip flights from Washington, D.C. Dulles Intl Airport to San Antonio chosen by Cheapflights users in the past 12 months, using the same layover each way.
Las Vegas (LAS) – chosen by Cheapflights users on 67% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to San Antonio on Cheapflights.
What’s the cheapest layover airport for flights from Washington, D.C. Dulles Intl Airport to San Antonio?
Average round-trip fare for 1-stop flights from Washington, D.C. Dulles Intl Airport to San Antonio, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $409.
What’s the fastest layover option from Washington, D.C. Dulles Intl Airport to San Antonio?
Shortest average travel time for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 6h 10m.
Which airport typically offers the quickest layover for flights from Washington, D.C. Dulles Intl Airport to San Antonio?
Average layover duration for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to San Antonio, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Atlanta (ATL) offer the fastest connection on this route, with an average layover time of 2h 02m.
The best insider tips for Washington, D.C. Dulles Intl Airport to San Antonio flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to San Antonio trip
Our travel experts
Reviews of airlines servicing San Antonio
Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated October 18, 2026.
See what other customers who have flown with Delta,United Airlines, andFrontier from Washington, D.C. Dulles Intl Airport to San Antonio have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentMatt,Sep 2023
LAX - DAL
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentMatt,Sep 2023
LAX - DAL
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentMatt,Sep 2023
LAX - DAL
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentMatt,Sep 2023
LAX - DAL
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
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Dulles Intl and San Antonio flights
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Top 3 airlines flying from Dulles Intl to San Antonio
Discover the top 3 airlines that operate flights from Dulles Intl to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$220 | Average$329 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$249 | Average$427 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$268 | Average$353 | FlexibilityNo cancel fee | On-timeN/A |