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Cheap Flights from Baltimore Washington International to San Diego International

Compare Baltimore Washington International to San Diego International flight deals

Find the cheapest month or even day of the year to fly to San Diego International

Book the best San Diego International fare with no extra fees

Flight deals from Baltimore Washington International to San Diego International

Looking for a cheap last-minute deal or the best return flight from Baltimore Washington International Airport to San Diego International Airport? If you want to travel next month, return fares start from R 3,169. Find the lowest prices on one-way and return tickets right here.
San Diego.R 1,704 per passenger.Departing Mon, 31 Aug.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Baltimore Washington International on Mon, 31 Aug, arriving in San Diego International.Price includes taxes and charges.From R 1,704, select.
San Diego.R 1,936 per passenger.Departing Tue, 1 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Tue, 1 Sep, arriving in San Diego International.Price includes taxes and charges.From R 1,936, select.
San Diego.R 1,959 per passenger.Departing Sat, 3 Oct.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Sat, 3 Oct, arriving in San Diego International.Price includes taxes and charges.From R 1,959, select.
San Diego.R 1,959 per passenger.Departing Tue, 1 Sep.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Tue, 1 Sep, arriving in San Diego International.Price includes taxes and charges.From R 1,959, select.
San Diego.R 1,959 per passenger.Departing Sat, 29 Aug.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Sat, 29 Aug, arriving in San Diego International.Price includes taxes and charges.From R 1,959, select.
San Diego.R 1,964 per passenger.Departing Wed, 18 Nov.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Wed, 18 Nov, arriving in San Diego International.Price includes taxes and charges.From R 1,964, select.
San Diego.R 2,487 per passenger.Departing Tue, 15 Dec.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Tue, 15 Dec, arriving in San Diego International.Price includes taxes and charges.From R 2,487, select.
San Diego.R 3,161 per passenger.Departing Thu, 14 Jan.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Thu, 14 Jan, arriving in San Diego International.Price includes taxes and charges.From R 3,161, select.
San Diego.R 3,489 per passenger.Departing Sat, 15 May.One-way flight with Delta.Outbound indirect flight with Delta, departs from Baltimore Washington International on Sat, 15 May, arriving in San Diego International.Price includes taxes and charges.From R 3,489, select.
San Diego.R 3,788 per passenger.Departing Fri, 12 Feb.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Fri, 12 Feb, arriving in San Diego International.Price includes taxes and charges.From R 3,788, select.
San Diego.R 4,010 per passenger.Departing Wed, 16 Jun.One-way flight with Delta.Outbound indirect flight with Delta, departs from Baltimore Washington International on Wed, 16 Jun, arriving in San Diego International.Price includes taxes and charges.From R 4,010, select.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Baltimore Washington International to San Diego International flights are currently cheapest in August.
Aug
from R 1,704
Sep
from R 1,936
Oct
from R 1,959
Nov
from R 1,964
Dec
from R 2,487
Jan
from R 3,161
Feb
from R 3,788
Mar
Find prices
Apr
Find prices
May
from R 3,489
Jun
from R 4,010
Jul
Find prices

Direct flights from Baltimore Washington International to San Diego International

Baltimore Washington International to San Diego International: Alternative routes

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

San Diego International

4km from central San Diego
ClosestCheapest
from R 1,705
Search flights

McClellan-Palomar

48km from central San Diego
from R 14,201
Search flights

Washington D.C. to San Diego: Flight information

The things to know before you go.
Cheapest flight foundR 1,704
Cheapest month to flyAugust
Average flight time5 hrs, 34 mins
Most popular airlineSouthwest Airlines
Average flights per week25

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

The best price we found for a return flight from Baltimore Washington International to San Diego International is R 3,167. 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 34 minutes is the average flight time from Baltimore Washington International to San Diego International.
Southwest Airlines flies direct from Baltimore Washington International to San Diego International.
As of August 2026, there are 25 flights per week flying from Baltimore Washington International to San Diego International.
The cheapest month to fly from Baltimore Washington International to San Diego International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Baltimore Washington International Airport to San Diego International Airport on Tuesday, 15 September 2026.
Yes – the average flight time is 5 hours and 34 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 San Diego International 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 San Diego is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Alaska Airlines and Southwest Airlines offer the cheapest flight tickets to San Diego International.

Flying from Baltimore Washington International Airport (BWI) to San Diego International Airport (SAN): what you need to know

  • The average length of a direct flight from Baltimore Washington International Airport to San Diego International Airport is 5 hours 25 minutes.

  • San Diego is three hours behind Washington DC and observes the UTC-8 timezone.

  • Flights from BWI to SAN start at 06:15 — the first with Southwest Airlines. The last departure is at 21:05 with Southwest Airlines. In total, you can take your pick of 14 weekly Baltimore Washington International Airport to San Diego International Airport flights.

  • Your BWI to SAN flight won't wait if you're late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • During popular months such as July, you'll want to get to the airport well in advance. Plan to arrive two hours before a domestic departure and four hours ahead for international flights when you travel during a peak period in general.

  • Southwest Airlines offers direct flights from Baltimore Washington International Airport to San Diego International Airport. Book with this popular airline, then get ready to tick off the sights in San Diego — and maybe even more of the United States if your schedule allows.

  • The majority of travellers choose to fly with Southwest Airlines on this route.

  • The most punctual carrier operating BWI to SAN flights is Southwest Airlines. Its services land as planned 76.13% of the time.

  • If you'd like to split up your journey, simply deselect 'Direct flights only' when searching for your ticket from Baltimore Washington International Airport to San Diego International Airport. These are the most popular stopovers between BWI and SAN:

    • Atlanta Hartsfield-Jackson Airport

    • Denver International Airport

    • St Louis Airport

How to find the cheapest flights from Baltimore Washington International Airport (BWI) to San Diego International Airport (SAN)

  • At the moment, R 1,705 is the cheapest price we've seen for a one-way Baltimore Washington International Airport to San Diego International Airport flight. The best price for a return ticket is R 3,167. Keep in mind that fares may change due to availability when booking.

  • Don't wait until the last minute. You're more likely to find cheap tickets from BWI to SAN if you book in advance. Airlines often offer some great early bird discounts.

  • Schedule your trip for May. That's the cheapest month for flights from Baltimore Washington International Airport to San Diego International Airport. If your travel dates are flexible, try out the 'Whole month' tool to find the lowest price across every month.

  • Stay on top of deals for cheap flights from BWI to SAN by creating a Price Alert. We'll send you an email or push notification on the app when a new low fare is offered.

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

Handy information about Baltimore Washington International Airport (BWI)

  • When it comes to Baltimore Washington International Airport's on-time performance, 77% of flights arrive within the expected timeframe.

  • Baltimore Washington International Airport is around 48 kilometres from central Washington DC. If you're ride-sharing, catching a taxi or driving from the centre, it'll take 40 minutes or so to arrive, depending on the traffic.

  • Planning to take public transport? Expect a trip time of around 50 minutes.

  • Catching an early flight from Baltimore Washington International Airport to San Diego International Airport? Avoid the stress of rushing to the terminal (and get some extra shut-eye) by picking one of these stays near BWI:

Arriving at San Diego International Airport (SAN)

When to fly to San Diego International Airport (SAN)

  • The quietest month for a flight from Baltimore Washington International Airport to San Diego International Airport is March, while August is the busiest. Choose the best time to go to San Diego based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • Lock in your flight from Baltimore Washington International Airport to San Diego International Airport for August if you'd like to visit San Diego during its warmest month. Expect temperatures of between 16ºC (61ºF) and 27ºC (81ºF).

  • If you'd rather travel in cooler conditions, look for a cheap ticket from BWI to SAN in February. Temperatures average between 8ºC (46ºF) and 22ºC (72ºF) then.

Explore more of the United States

  • You've seen San Diego, now it's time to explore other corners of the United States. Journey around 177 kilometres north-west to Los Angeles to tick off its top sights. From Hollywood Sign to Universal Studios Hollywood and Hollywood Bowl, your itinerary will be busy.

  • Phoenix is another well-known destination in the United States and is around 483 kilometres east of San Diego. No journey is complete without experiencing Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.

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

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.