United Flight UA1870 Deals & Information (2025/2026)

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United Flight 1870 Route Deals From $159

The cheapest prices found with in the last 7 days for return flights were $277 and $159 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 24 - Tue, Sep 30
SFO
San Francisco Intl.
IAD
Washington Dulles Intl.
$277 Roundtrip, found 6 hours ago
$277
Roundtrip
found 6 hours ago
Select United flight, departing Wed, Sep 24 from San Francisco Intl. to Washington Dulles Intl., returning Tue, Sep 30, priced at $277 found 6 hours ago
Wed, Oct 1 - Tue, Oct 7
SFO
San Francisco Intl.
IAD
Washington Dulles Intl.
$299 Roundtrip, found 4 days ago
$299
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 1 from San Francisco Intl. to Washington Dulles Intl., returning Tue, Oct 7, priced at $299 found 4 days ago
Wed, Sep 24 - Tue, Sep 30
SFO
San Francisco Intl.
IAD
Washington Dulles Intl.
$307 Roundtrip, found 6 hours ago
$307
Roundtrip
found 6 hours ago
Select United flight, departing Wed, Sep 24 from San Francisco Intl. to Washington Dulles Intl., returning Tue, Sep 30, priced at $307 found 6 hours ago
Wed, Sep 24 - Tue, Sep 30
SFO
San Francisco Intl.
IAD
Washington Dulles Intl.
$322 Roundtrip, found 6 hours ago
$322
Roundtrip
found 6 hours ago
Select United flight, departing Wed, Sep 24 from San Francisco Intl. to Washington Dulles Intl., returning Tue, Sep 30, priced at $322 found 6 hours ago
Fri, Sep 26 - Thu, Oct 2
SFO
San Francisco Intl.
IAD
Washington Dulles Intl.
$324 Roundtrip, found 6 hours ago
$324
Roundtrip
found 6 hours ago
Select United flight, departing Fri, Sep 26 from San Francisco Intl. to Washington Dulles Intl., returning Thu, Oct 2, priced at $324 found 6 hours ago

Frequently asked questions

What route does flight number UA1870 take?
You'll be landing at SAN from Houston, TX Airport (IAH-George Bush Intercontinental) if you're traveling on flight number UA1870. You'll be in the sky for 3 hours and 27 minutes on this trip. What's more, it conveniently travels non-stop.
What terminal does UA1870 fly out of?
Travelers with a booking on flight number UA1870 from George Bush Intercontinental Airport (IAH) to San Diego Airport usually fly out of Terminal C.
What kind of plane is on flight number UA1870?
Get set to step aboard an Airbus A319 if you've reserved a seat on flight UA1870. The majority of flights from Houston, TX Airport (IAH-George Bush Intercontinental) to San Diego Airport are operated using this type of aircraft.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA1870 flight with Travelocity, please visit our Customer Service Portal.