Cheap flights from San Antonio to Washington, D.C. from $91
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Washington, D.C. departing on 8/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from San Antonio to Washington, D.C. Dulles Intl Airport
Our best United Airlines deals on San Antonio to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines flights from San Antonio to Washington, D.C. Dulles Intl Airport
Our best American Airlines deals on San Antonio to Washington, D.C. Dulles Intl Airport flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from San Antonio to Washington, D.C. Dulles Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?
In general, February is the cheapest month to fly from San Antonio to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $309. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $335.
What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $471. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to Washington, D.C. Dulles Intl Airport for around $730.
What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Flying to Washington, D.C. Dulles Intl Airport from San Antonio at noon is the least expensive time of day to depart. momondo users have found prices as low as $296 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $989 on average. Flights to Washington, D.C. Dulles Intl Airport from San Antonio in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest San Antonio to Washington, D.C. Dulles Intl flight route?
Fly from San Antonio to Washington, D.C. Dulles Intl for the best San Antonio - Washington, D.C. Dulles Intl flight prices
How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?
You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from San Antonio when booking 22 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $387 when searching 22 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from San Antonio for as low as $280 on momondo.
What cabin class options are available on San Antonio to Washington, D.C. Dulles Intl flights?
There are 4 cabin classes available to choose from on San Antonio to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on San Antonio to Washington, D.C. Dulles Intl Airport flights?
You could potentially save up to 10% on your flight if you consider stops on a San Antonio to Washington, D.C. Dulles Intl Airport flight.
How have San Antonio to Washington, D.C. Dulles Intl Airport flight prices changed over time?
As of June 2025, prices for San Antonio to Washington, D.C. Dulles Intl Airport flights are approximately 5% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from San Antonio to Washington, D.C. Dulles Intl?
Southwest, United Airlines, and Frontier are the most popular carriers operating from San Antonio to Washington, D.C. Dulles Intl
What airlines fly to Washington, D.C. Dulles Intl Airport?
United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from San Antonio according to our data. United Airlines is the first choice among our users, with 81% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 6 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from San Antonio to Washington, D.C. Dulles Intl Airport on average per day?
As of June 2025, there are 4 flights per day flying from San Antonio to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 7:00AM, with 76% of flights taking off at noon.
How many flights depart from San Antonio to Washington, D.C. Dulles Intl Airport on average per week?
As of June 2025, 30 flights take off from San Antonio and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Mon, with 23% of weekly flights taking off on this day.
When to book flights from San Antonio to Washington, D.C. Dulles Intl Airport
Cheap San Antonio to Washington, D.C. Dulles Intl Airport (SAT to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Antonio to Washington, D.C. Dulles Intl Airport
How far is San Antonio to Washington, D.C. Dulles Intl by plane?
San Antonio and Washington, D.C. Dulles Intl are 1365.3 mi apart from one another. In terms of flight time, this usually takes a little over 3h 19m.
When did momondo last update prices for flights from San Antonio Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from San Antonio Airport to Washington, D.C. Dulles Intl Airport refresh daily.
How many operators does momondo search for flights from San Antonio Airport to Washington, D.C. Dulles Intl Airport?
As of June 2025, there are 4 operators available to choose from for flights from San Antonio Airport to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from San Antonio Airport to Washington, D.C. Dulles Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from San Antonio to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between San Antonio and Washington, D.C. Dulles Intl Airport, the leading plane model is Boeing 737-900, making up 27.25% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 12.81%, Boeing 737 MAX 8 with 12.50%, and Airbus A321-100/200 with 10.55%.
What is the most popular airline from San Antonio to Washington, D.C. Dulles Intl Airport?
momondo data reveals that the most frequently booked airline on the route from San Antonio to Washington, D.C. Dulles Intl Airport is United Airlines, representing 79% of all bookings. The subsequent popular airlines are Delta at 11%, American Airlines at 9%, and Southwest at 2%.
Best airlines flying from San Antonio to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from San Antonio to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $204 | Free Cancellation | Rating 8.0 4,287 reviews | |||
| PriceFrom $218 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $239 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $248 | Free Cancellation | Rating 8.0 7,946 reviews |
United Airlines Flights From San Antonio to Washington, D.C. Dulles Intl Airport
United Airlines is one of the most popular airlines flying from San Antonio to Washington, D.C. Dulles Intl Airport, operating 8 flights/week on average for this route. A good United Airlines flight deal for San Antonio to Washington, D.C. Dulles Intl Airport starts from $239 round-trip, up to an average price of $400. Our users have rated United Airlines at 7.4/10.
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Why should I use momondo to find a flight deal from San Antonio to Washington, D.C.?
It is quick and easy to find San Antonio to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.
Can I find flights from San Antonio to Washington, D.C. with flexible booking policies on momondo?
All flight searches from San Antonio to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from San Antonio to Washington, D.C.?
Once you have performed a search for San Antonio to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from San Antonio to Washington, D.C. right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Washington, D.C. from San Antonio. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.