$167 Cheap United flights Harrisburg (MDT) to San Diego (SAN)

View $167 flight on Tue, Sep 9, 2025Opens in a new window

$167 Cheap United flights Harrisburg (MDT) to San Diego (SAN)

Prices were available within the past 7 days and start at $167 for one-way flights and $309 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Sep 29 - Mon, Oct 6
MDT
Harrisburg
SAN
San Diego
$309 Roundtrip, found 3 hours ago
$309
Roundtrip
found 3 hours ago
Select United flight, departing Mon, Sep 29 from Harrisburg to San Diego, returning Mon, Oct 6, priced at $309 found 3 hours ago
United
Wed, Aug 27 - Fri, Sep 5
MDT
Harrisburg
SAN
San Diego
$328 Roundtrip, found 2 days ago
$328
Roundtrip
found 2 days ago
Select United flight, departing Wed, Aug 27 from Harrisburg to San Diego, returning Fri, Sep 5, priced at $328 found 2 days ago
United
Sat, Sep 6 - Fri, Sep 12
MDT
Harrisburg
SAN
San Diego
$333 Roundtrip, found 3 days ago
$333
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 6 from Harrisburg to San Diego, returning Fri, Sep 12, priced at $333 found 3 days ago
United
Mon, Sep 29 - Mon, Oct 6
MDT
Harrisburg
SAN
San Diego
$337 Roundtrip, found 3 hours ago
$337
Roundtrip
found 3 hours ago
Select United flight, departing Mon, Sep 29 from Harrisburg to San Diego, returning Mon, Oct 6, priced at $337 found 3 hours ago
United
Wed, Jan 7 - Wed, Jan 21
MDT
Harrisburg
SAN
San Diego
$341 Roundtrip, found 9 hours ago
$341
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Jan 7 from Harrisburg to San Diego, returning Wed, Jan 21, priced at $341 found 9 hours ago
United
Tue, Oct 28 - Sat, Nov 1
MDT
Harrisburg
SAN
San Diego
$342 Roundtrip, found 4 days ago
$342
Roundtrip
found 4 days ago
Select United flight, departing Tue, Oct 28 from Harrisburg to San Diego, returning Sat, Nov 1, priced at $342 found 4 days ago
Flights from Harrisburg (MDT) to San Diego (SAN)
Origin airport
Harrisburg Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Popular airline
Delta
Distance
2284 mi

Frequently asked questions

How much is a United Airlines flight from Harrisburg Intl. Airport (MDT) to San Diego Intl. Airport (SAN)?
Make use of the "Price (lowest to highest)" filter on Expedia to search for cheap United Airlines round-trip flights from $309 from MDT to SAN. Affordable one-way tickets from $167 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from MDT to SAN with United Airlines?
United Airlines flights to San Diego tend to be cheaper in the off-peak months of January and November. Whether you're searching for a return or one-way ticket, you could land a better deal then.
What is the cheapest time to book flights from Harrisburg Intl. Airport (MDT) to San Diego Intl. Airport (SAN) with United Airlines?
Start searching one to three months before your departure to score cheaper fares on United Airlines flights from Harrisburg Intl. Airport (MDT) to San Diego Intl. Airport (SAN). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Harrisburg Intl. Airport (MDT) to San Diego Intl. Airport (SAN)?
Fill in your dates, press search and check the "Nonstop" filter on Expedia to find any direct flights from MDT to SAN with United Airlines or other airlines.
What is the earliest United Airlines flight from MDT to SAN?
To find the earliest departure from MDT to SAN with United Airlines, sort your results by "Morning" and "Early Morning." Booking an early flight generally means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in San Diego?
San Diego Intl. Airport (SAN) is the main San Diego hub for United Airlines flights from Harrisburg Intl. Airport (MDT).
Why fly with United Airlines from MDT to SAN?
A rewarding loyalty program and the ability to rack up points through United Mileage Plus are the start of the reasons to leave from MDT to SAN with United Airlines. Plus, when you join Expedia's free One Key™ program, you can earn OneKeyCash™* on top of United Airlines's loyalty program earnings. It's yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Harrisburg Intl. Airport (MDT) to San Diego Intl. Airport (SAN)?
Changes are typically free within 24 hours of making a booking, but your airline may charge you after that time. For further details about altering your flights, check out your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to update your itinerary without additional charges, check the "No cancel fee" or "Changes included" filter when organizing your next break.

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*Available to One Key members.