Flights from Boston, MA to Washington, DC
Compare prices from 500+ airlines and find the best deals on flights from BOS to IAD.*Prices shown are estimated based on historical data.
Find the Best Fares
Check live availability for BOS to IAD now.
β‘ Check 500+ airlines instantly
About Flights from Boston, MA to Washington, DC
Looking for cheap flights from Boston, MA (BOS) to Washington, DC (IAD)? You've come to the right place. Fly2Any compares prices from over 500 airlines to help you find the best deals on this popular route.
Flight Information
Flights from BOS to IAD typically take around 12h 58m. The flight covers a distance of 6142 miles. Multiple airlines operate this route, including ANA, Alaska Airlines, Air France, Japan Airlines, Spirit Airlines.
Best Time to Book
For the best prices on BOS to IAD flights, we recommend booking 2-3 months in advance. Prices tend to be lowest for mid-week departures (Tuesday and Wednesday). Use our Price Calendar feature to compare prices across different dates and find the cheapest options.
Airlines on This Route
Several major airlines serve the Boston, MA to Washington, DC route, including:
- ANA (NH)
- Alaska Airlines (AS)
- Air France (AF)
- Japan Airlines (JL)
- Spirit Airlines (NK)
Frequently Asked Questions - BOS to IAD Flights
How long is the flight from Boston, MA to Washington, DC?
Direct flights from Boston, MA (BOS) to Washington, DC (IAD) take approximately 12h 58m. Connecting flights may add 2-4 hours depending on layover location. For the fastest journey, look for nonstop flights which are typically available on this popular route.
When is the best time to book BOS to IAD flights?
For the best prices on BOS to IAD flights, book 6-8 weeks in advance for domestic routes or 2-4 months ahead for international travel. Domestic flights are typically 20-40% cheaper in off-peak months. Peak season months (July, August) have higher prices, while January and February typically offer the best deals.
What are the cheapest days to fly from Boston, MA to Washington, DC?
Tuesday and Wednesday departures are typically 15-25% cheaper than weekend flights on the BOS to IAD route. Saturday is usually the most expensive day to fly. For additional savings, consider red-eye flights or early morning departures, which often have lower fares and less crowded airports.
Which airlines fly from BOS to IAD?
Major carriers on this route include JetBlue, Delta, and other domestic and international airlines. Boston Logan has great public transit access via the Blue Line. JetBlue offers many affordable routes.
What should I know about flying from Boston, MA airport?
Boston Logan has great public transit access via the Blue Line. JetBlue offers many affordable routes. Book flights that depart mid-morning or early afternoon for the smoothest experience - these times typically have shorter security lines and fewer delays.
What is the cheapest month to fly from Boston, MA to Washington, DC?
The cheapest months to fly from BOS to IAD are typically January, February, September. Domestic flights are typically 20-40% cheaper in off-peak months. Avoid peak travel periods like July and August when prices can be 30-50% higher. Use Fly2Any's price alerts to get notified when fares drop.
What is the baggage allowance for BOS to IAD flights?
Baggage allowances vary by airline and fare class. Most full-service carriers include one checked bag (up to 50 lbs) on this route. Budget carriers may charge $25-$60 for checked bags. All airlines allow one personal item free. Compare total costs including baggage fees when booking to get the best deal.
Are there direct flights from Boston, MA to Washington, DC?
Yes, several airlines offer nonstop flights from BOS to IAD. Direct flights take approximately 12h 58m. If you're flexible with your schedule, connecting flights through major hubs like ATL or ORD may offer lower prices.

