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C$140 Cheap Flights from San Diego International (SAN) to Washington Dulles (IAD)

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Flight deals from San Diego International to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from San Diego International Airport to Washington Dulles Airport? If you want to travel next month, return fares start from C$253. Find the lowest prices on one-way and return tickets right here.
Washington D.C..C$140 per passenger.Departing Fri., May 29.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Fri., May 29, arriving in Washington Dulles.Price includes taxes and charges.From C$140, select.
Washington D.C..C$142 per passenger.Departing Wed., Jun. 17.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Wed., Jun. 17, arriving in Washington Dulles.Price includes taxes and charges.From C$142, select.
Washington D.C..C$161 per passenger.Departing Wed., Jul. 1.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Wed., Jul. 1, arriving in Washington Dulles.Price includes taxes and charges.From C$161, select.
Washington D.C..C$170 per passenger.Departing Wed., Aug. 26.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Wed., Aug. 26, arriving in Washington Dulles.Price includes taxes and charges.From C$170, select.
Washington D.C..C$198 per passenger.Departing Mon., Apr. 27.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Mon., Apr. 27, arriving in Washington Dulles.Price includes taxes and charges.From C$198, select.
Washington D.C..C$216 per passenger.Departing Tue., May 19.One-way flight with United.Outbound direct flight with United departs from San Diego International on Tue., May 19, arriving in Washington Dulles.Price includes taxes and charges.From C$216, select.
Washington D.C..C$243 per passenger.Departing Thu., Jun. 4.One-way flight with United.Outbound direct flight with United departs from San Diego International on Thu., Jun. 4, arriving in Washington Dulles.Price includes taxes and charges.From C$243, select.
Washington D.C..C$260 per passenger.Departing Fri., Jul. 17.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from San Diego International on Fri., Jul. 17, arriving in Washington Dulles.Price includes taxes and charges.From C$260, select.
Washington D.C..C$260 per passenger.Departing Tue., Dec. 15.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from San Diego International on Tue., Dec. 15, arriving in Washington Dulles.Price includes taxes and charges.From C$260, select.
Washington D.C..C$261 per passenger.Departing Thu., Sep. 17.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from San Diego International on Thu., Sep. 17, arriving in Washington Dulles.Price includes taxes and charges.From C$261, select.
Washington D.C..C$261 per passenger.Departing Tue., Aug. 4.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from San Diego International on Tue., Aug. 4, arriving in Washington Dulles.Price includes taxes and charges.From C$261, select.
Washington D.C..C$262 per passenger.Departing Wed., Oct. 21.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from San Diego International on Wed., Oct. 21, arriving in Washington Dulles.Price includes taxes and charges.From C$262, select.
Washington D.C..C$269 per passenger.Departing Sat., Nov. 7.One-way flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Sat., Nov. 7, arriving in Washington Dulles.Price includes taxes and charges.From C$269, select.
Washington D.C..C$283 per passenger.Departing Sat., Nov. 7.One-way flight with United.Outbound direct flight with United departs from San Diego International on Sat., Nov. 7, arriving in Washington Dulles.Price includes taxes and charges.From C$283, select.
Washington D.C..C$455 per passenger.Departing Tue., Apr. 28.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from San Diego International on Tue., Apr. 28, arriving in Washington Dulles.Price includes taxes and charges.From C$455, select.

Find the cheapest month to fly from San Diego International to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Diego International to Washington Dulles flights are currently cheapest in May.
Apr.
from C$198
May
from C$140
Jun.
from C$142
Jul.
from C$161
Aug.
from C$170
Sep.
from C$261
Oct.
from C$262
Nov.
from C$269
Dec.
from C$260
Jan.
Find prices
Feb.
Find prices
Mar.
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Which airlines fly from San Diego International to Washington Dulles?

San Diego International to Washington Dulles: Alternative routes

Compare routes from San Diego International to Washington D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Dulles.

Washington Ronald Reagan

5km from central Washington D.C.
ClosestCheapest
from C$117
Search flights

Camp Springs Andrews AFB

17km from central Washington D.C.
Search flights

Washington Dulles

37km from central Washington D.C.
from C$140
Search flights

Baltimore Washington International

44km from central Washington D.C.
from C$143
Search flights

Manassas

47km from central Washington D.C.
Search flights

San Diego to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundC$140
Cheapest month to flyMay
Average flight time5 hrs, 2 mins
Most popular airlineUnited
Average flights per week68

Finding cheap flights from San Diego International to Washington Dulles: Frequently asked questions

The best price we found for a return flight from San Diego International to Washington Dulles is C$253. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 2 minutes is the average flight time from San Diego International to Washington Dulles.
United, Alaska Airlines and Qatar Airways fly direct from San Diego International to Washington Dulles.
As of April 2026, there are 68 flights per week flying from San Diego International to Washington Dulles.
The cheapest month to fly from San Diego International to Washington Dulles is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Diego International Airport to Washington Dulles Airport on Saturday, May 23, 2026.
Yes – the average flight time is 5 hours and 2 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington Dulles but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines and Alaska Airlines offer the cheapest flight tickets to Washington Dulles.

Traveling from San Diego International Airport (SAN) to Washington Dulles International Airport (IAD): what you need to know

  • A direct flight from San Diego International Airport to Washington Dulles International Airport takes an average of 4 hours 57 minutes. The timezone in Washington DC is UTC-4, so it's 3 hours ahead of San Diego.

  • Each week, there are 72 flights from San Diego International Airport to Washington Dulles International Airport. If you want to be on board as soon as possible, select the 08:00 United Airlines flight. If you're keen to make the most of your time before you fly, the last departure from SAN to IAD is 21:55 with United Airlines.

  • Popular months like July or high seasons such as Thanksgiving and Christmas will mean bigger lines at check-in and security. Play it safe and get to the airport even earlier. Arriving two hours before a domestic flight and up four hours ahead of an international flight is a wise move.

  • Flying into Washington DC (and discovering more of United States!) is a breeze with United Airlines. This popular airline offers direct flights from San Diego International Airport to Washington Dulles International Airport.

  • If you'd like a stopover for your flight from San Diego International Airport to Washington Dulles International Airport, just deselect 'Direct flights only' and look through your options. Here are the top stopovers between SAN and IAD:

    • Indianapolis International Airport

    • Phoenix Sky Harbor International Airport

    • John Glenn Columbus International Airport

How to find the cheapest flights from San Diego International Airport (SAN) to Washington Dulles International Airport (IAD)

  • The best price we've seen for a one-way ticket from San Diego International Airport to Washington Dulles International Airport is C$140. The cheapest price for a return flight is C$253. Remember that fares can change due to availability when booking.

  • Book 9 months before traveling. After looking at the numbers on our calendar, this is how far you'll want to book ahead to secure cheap flight tickets from SAN to IAD.

  • May is the cheapest month for flight tickets from San Diego International Airport to Washington Dulles International Airport. If you're looking to travel during a different time of year, the 'Whole month' tool will give you the lowest airfares across every month.

  • Getting a cheap ticket from SAN to IAD is easy with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch as soon as the price has dropped.

  • Tailor your flights with filters. Pick your ideal departure and arrival times, airlines and total journey duration. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from San Diego International Airport to Washington Dulles International Airport.

Handy information about San Diego International Airport (SAN)

  • Located around 5 kilometres from the center of San Diego, San Diego International Airport can be reached in about 9 minutes by car, depending on traffic. The ride on public transport takes roughly 20 minutes.

  • Want a leisurely start to your journey? Stay near SAN. Whether you're catching an early flight from San Diego International Airport to Washington Dulles International Airport or just don't want to be rushed, these stays are perfect:

Arriving at Washington Dulles International Airport (IAD)

Getting from Washington Dulles International Airport (IAD) to central Washington DC

  • From Washington Dulles International Airport, Washington DC is approximately 56 kilometres away. It takes around 51 minutes to get to the center driving.

  • Traveling by public transport takes roughly 3 hours and 26 minutes.

When to fly to Washington Dulles International Airport (IAD)

  • It's time to plan your trip dates for your flight from San Diego International Airport to Washington Dulles International Airport. July is the busiest month to visit Washington DC. If you like a more low-key vibe, go in February.

  • When reserving your flight from San Diego International Airport to Washington Dulles International Airport, consider the kind of weather you enjoy. July is the warmest month in Washington DC, with temperatures ranging from 19ºC to 33ºC.

  • Search for cheap flight tickets from SAN to IAD in January if you like cooler conditions. Temperatures are at their lowest around then, ranging between -6ºC and 10ºC on average.

More about Washington DC

  • Start your Washington DC trip right by finding the perfect place to stay. As soon as you've booked your flight from SAN to IAD, browse our range of hotel options including:

  • There are so many things to see and do in this city it can be hard to figure out where to begin. White House Historical Association, The White House and National Mall are major attractions which should feature on every Washington DC itinerary.

Complete your Washington DC trip with hotels and a car rental

  • You've booked your cheap ticket to Washington Dulles International Airport — next on the list is finding a great stay, and maybe even your own set of wheels. We've compared prices across hundreds of companies to bring you the top hotels and car rental deals in Washington DC.

Plan the rest of your trip from San Diego to Washington D.C.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.