Cheap flights from Washington, D.C. Dulles Intl Airport to San Juan from $78
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to San Juan departing on 8/17. 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 Washington, D.C. Dulles Intl Airport to San Juan
Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to San Juan flight tickets
Frontier flights from Washington, D.C. Dulles Intl Airport to San Juan
Our best Frontier deals on Washington, D.C. Dulles Intl Airport to San Juan flight tickets
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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to San Juan
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 San Juan?
If you’re not able to fly to San Juan in June, then May is your next best option. Flight prices from Washington, D.C. Dulles Intl Airport to San Juan during May average around $416.
What is the cheapest day to depart on your flight to San Juan?
The cheapest day to depart from Washington, D.C. Dulles Intl Airport to San Juan is on a Tuesday when prices can be found for as low as $387. The most expensive day to fly to San Juan is Friday, with ticket prices averaging around $478.
What is the cheapest time of day to depart on your flight to San Juan?
The cheapest time of day to fly to San Juan is at noon when flights can be purchased for as low as $238. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $453 on average. Flights to San Juan from Washington, D.C. Dulles Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Washington, D.C. Dulles Intl to San Juan flight route?
Fly from Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl for the best Washington, D.C. Dulles Intl - San Juan flight prices
How far in advance should I book a flight to San Juan?
You are more likely to see cheaper flights to San Juan from Washington, D.C. Dulles Intl Airport when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $465 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Washington, D.C. Dulles Intl Airport for as low as $352 on momondo.
What cabin class options are available on Washington, D.C. Dulles Intl to San Juan flights?
There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl to San Juan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Washington, D.C. Dulles Intl to San Juan?
United Airlines, Frontier, and Delta are the most popular carriers operating from Washington, D.C. Dulles Intl to San Juan
What airlines fly to San Juan?
United Airlines, Frontier and Delta are the top three most popular airlines that fly to San Juan from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 72% of people opting to fly with this airline when traveling to San Juan. Keep in mind that there are 6 different airlines that fly to San Juan on a routine basis, so you have a few additional options to choose from.
How many flights depart from Washington, D.C. Dulles Intl Airport to San Juan on average per day?
As of June 2025, 3 flights take off from Washington, D.C. Dulles Intl Airport and land in San Juan each day. The most common flight departure time for this route is 8:00AM, with 66% of daily flights taking off at noon.
How many flights depart from Washington, D.C. Dulles Intl Airport to San Juan on average per week?
As of June 2025, 22 flights take off from Washington, D.C. Dulles Intl Airport and land in San Juan each week. The most common flight departure day for this route is Sun, with 27% of weekly flights taking off on this day.
Cheap Washington, D.C. Dulles Intl Airport to San Juan flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to San Juan
How far is Washington, D.C. Dulles Intl to San Juan by plane?
San Juan is 1569.0 mi away from Washington, D.C. Dulles Intl. By plane, this route typically takes 3h 50m.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to San Juan?
Prices for flights from Washington, D.C. Dulles Intl Airport to San Juan are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to San Juan?
As of June 2025, there are 6 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to San Juan.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to San Juan?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to San Juan.
What documentation or ID do you need to fly to San Juan?
The travel and health documents required for your trip to San Juan can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Juan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Washington, D.C. Dulles Intl Airport to San Juan
Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San Juan with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $110 | Free Cancellation | Rating 5.9 3,294 reviews | |||
| PriceFrom $123 | Free Cancellation | Rating 6.3 8,062 reviews | |||
| PriceFrom $203 | Free Cancellation | Rating 7.3 2,923 reviews | |||
| PriceFrom $224 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $238 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $296 | Free Cancellation | Rating 7.4 8,798 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to San Juan?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to San Juan for you.
Can I find flights from Washington, D.C. to San Juan with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to San Juan from Washington, D.C. with this policy.
How can momondo help me find flights from Washington, D.C. to San Juan?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to San Juan.
I’m not ready to book a flight from Washington, D.C. to San Juan right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to San Juan from Washington, D.C.. 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.