$591 Cheap Flights from Washington (IAD) to Santarem (STM)

Popular airlines from Washington Dulles Intl. Airport (IAD) to Santarem (STM-Maestro Wilson Fonseca)

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Cheap Flights from Washington to Santarem (IAD-STM)

Prices were available within the past 7 days and start at $591 for one-way flights and $1,088 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

GOL Linhas Aereas S.A.
GOL Linhas Aereas S.A.
avianca
GOL Linhas Aereas S.A.
GOL Linhas Aereas S.A.
GOL Linhas Aereas S.A.
GOL Linhas Aereas S.A.
avianca
GOL Linhas Aereas S.A.
GOL Linhas Aereas S.A.
GOL Linhas Aereas S.A.
GOL Linhas Aereas S.A.
GOL Linhas Aereas S.A.
GOL Linhas Aereas S.A.
avianca
United
United
Flights from Washington (IAD) to Santarem (STM)
Origin airport
Washington Dulles Intl.
Destination airport
Maestro Wilson Fonseca
Roundtrip price
$1,087
Distance
3201 mi

Washington to Santarem Flights

The cheapest times to fly from Washington to Santarem

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Santarem are during the month of May. You can find some of the cheapest flights from Washington to Santarem with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Santarem

Sunday is one of the best days to book for cheap flights from Washington to Santarem: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Santarem

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Santarem in 2025. You can also book with separate airlines for your outbound and return journeys, from $591 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Santarem flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Santarem airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM) cost?
Grab a cheap one-way flight from $591 or cheap return flight from $1,088 from Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM)?
The cheapest month to fly from IAD to STM is May, when demand is low. Off-peak months are generally when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from IAD to STM. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM)?
You'll have to book a flight with a layover if you're traveling from Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from IAD to STM?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM)?
To avoid potential delays on the Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM) route, aim to fly before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM) last-minute?
Booking your flight from IAD to STM just before your trip is generally more expensive. But if you're flexible with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book an IAD to STM flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to STM flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place will take the hassle out of planning your trip. Simply secure your flights and select from our extensive range of hotels, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Eduardo Gomes Airport (STM)?
Typically, it's possible to reschedule or cancel your IAD to STM flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.