$120 Find Cheap Flights from San Antonio to Washington Dulles Airport - Compare and Save

Among airlines operating San Antonio to Washington, D.C. Dulles Intl Airport flights:

• United Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only United Airlines operates flights between San Antonio and Washington, D.C. Dulles Intl Airport.

Flights from San Antonio to Washington, D.C. Dulles Intl Airport usually depart from San Antonio (SAT) and arrive at Washington, D.C. Dulles Intl (IAD).

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in Economy Class
• JetBlue: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from San Antonio to Washington, D.C. Dulles Intl Airport:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $278 round-trip via Dallas/Fort Worth (DFW), compared to $392 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737-700 family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

One-stop flights from San Antonio to Washington, D.C. Dulles Intl Airport most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 53% of one-stop connections
• Charlotte Douglas (CLT) - 10% of one-stop connections
• Denver Intl (DEN) - 10% of one-stop connections
• Dallas/Fort Worth (DFW) - 10% of one-stop connections

Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 26% on the San Antonio to Washington, D.C. Dulles Intl Airport route. Thursday is the cheapest departure day at $359 round-trip on average, while Monday is the most expensive at $479, a difference of $120. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Morning is the busiest departure period on San Antonio to Washington, D.C. Dulles Intl Airport flights, with 50% of flights leaving in that window. Afternoon departures account for 50%, evening flights for 0%, and night flights for 0%.

Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

These are the earliest and latest flight times available from San Antonio to Washington, D.C. Dulles Intl Airport:

• Earliest: departs at 7:00 am and lands at 10:17 am
• Latest: departs at 12:24 pm and lands at 3:41 pm.

The flight takes about 3h 17m.

Last-minute fares on this route - booked within 2 weeks of departure - run 37% above the route average of $389. Book 19 weeks before departure for the lowest fares.

A nonstop flight from San Antonio to Washington, D.C. Dulles Intl Airport takes 3h 17m, covering 1,360 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $298 to $1,879. That means the highest observed fare was about 6x higher than the lowest one.

One-way fares from San Antonio to Washington, D.C. Dulles Intl Airport are currently lower than usual. Average one-way flight prices are about $148, which is 49% below the typical average for this route.

Flying via Charlotte Douglas (CLT) gives the shortest average 1-stop total travel time at 5h 42m, compared with 5h 53m via Atlanta Hartsfield-Jackson (ATL) and 6h 04m via Detroit Metropolitan Wayne County (DTW).

Washington, D.C. Dulles Intl Airport is 1 hour ahead of San Antonio (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:
• Dollar
• Budget
• Hertz
• Sixt
• Thrifty

Round-trip flights from San Antonio to Washington, D.C. Dulles Intl Airport range from $311 to $494, with an average of $389 over the past 12 months. Anything below $311 counts as a good deal.

JetBlue is the only airline on the San Antonio to Washington, D.C. Dulles Intl Airport route offering in-flight Wi-Fi. Pricing depends on fare class.