$1,696 Cheap Flights from Rennes (RNS) to Washington (IAD)

View $1,696 flight on Sat, Nov 8, 2025Opens in a new window

Popular airlines from Rennes (RNS-Saint-Jacques) to Washington Dulles Intl. Airport (IAD)

Cheap Flights from Rennes to Washington (RNS-IAD)

Prices were available within the past 7 days and start at $1,696 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Saint-Jacques Airport (RNS) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight from $1,696 or cheap return flight from Saint-Jacques Airport (RNS) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Saint-Jacques Airport (RNS) to Washington Dulles Intl. Airport (IAD)?
Traveling in may help you find better deals, as it's the cheapest month for flights between RNS and IAD. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Saint-Jacques Airport (RNS) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest RNS to IAD flight.
How many flights per day from Saint-Jacques Airport (RNS) to Washington Dulles Intl. Airport (IAD)?
Nonstop flights from Saint-Jacques Airport (RNS) to Washington Dulles Intl. Airport (IAD) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from RNS to IAD?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary based on a number of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Saint-Jacques Airport (RNS) to Washington Dulles Intl. Airport (IAD)?
To arrive at Washington Dulles Intl. Airport (IAD) on schedule, book a flight that leaves from Saint-Jacques Airport (RNS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Saint-Jacques Airport (RNS) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your flight from RNS to IAD right before your trip is typically more expensive. However, if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a RNS to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a RNS to IAD flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place takes the hassle out of travel planning. Just pick your flights and choose from our extensive range of hotels, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Saint-Jacques Airport (RNS) to Washington Dulles Intl. Airport (IAD)?
If you reserved your RNS to IAD flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Saint-Jacques
Destination airport
Washington Dulles Intl.
Distance
3691 mi

Book with confidence

Rennes to Washington Flights

The cheapest times to fly from Rennes to Washington

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 Rennes to Washington are during the month of . You can find some of the cheapest flights from Rennes to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rennes to Washington

Sunday is one of the best days to book for cheap flights from Rennes to Washington: 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 Rennes to Washington

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 Rennes to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,696 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 Rennes to Washington 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 Rennes to Washington 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.

 

Rennes to Washington Flights

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*Available to One Key members.