United Flight NK520 Deals & Information (2025/2026)

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United Flight 520 Route Deals From $80

The cheapest prices found with in the last 7 days for return flights were $157 and $80 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 27 - Mon, Sep 29
IAH
George Bush Intercontinental
ORD
O'Hare Intl.
$157 Roundtrip, just found
$157
Roundtrip
just found
Select United flight, departing Sat, Sep 27 from George Bush Intercontinental to O'Hare Intl., returning Mon, Sep 29, priced at $157 just found

Frequently asked questions

What route does flight number UA520 take?
Flight number UA520 flies direct from San Francisco Intl. Airport (SFO) to JFK Airport. During this trip, expect to be in the air for about 5 hours and 36 minutes. Consider booking ahead to get your preferred seat.
How often is UA520 on time?
If you're flying on United Airlines flight number UA520 from San Francisco Intl. Airport (SFO) to John F. Kennedy Intl. Airport (JFK), you'll be glad to know that 84% of these journeys touch down on time. On the odd occasion that there's a delay, the average wait time is roughly 15 minutes. This service has a star rating of 3.15.
What terminal does UA520 fly out of?
UA520 runs between San Francisco Intl. Airport (SFO) and JFK, and those taking this flight normally depart from Terminal 3.
What kind of plane is on flight number UA520?
The Boeing 767-300 is the kind of plane that's generally used for flight number UA520. This flight almost always heads off from San Francisco Intl. Airport (SFO) and comes in to land at John F. Kennedy Intl. Airport (JFK).
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 UA520 flight with Travelocity, please visit our Customer Service Portal.