American Airlines Flight 851 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

American Airlines Flight 851 Route Deals From $197

The cheapest prices found with in the last 7 days for return flights were $360 and $197 for one-way flights to Missoula Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jul 21 - Tue, Aug 5
DFW
Dallas-Fort Worth Intl.
MSO
Missoula Intl.
$360 Roundtrip, found 5 days ago
$360
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Jul 21 from Dallas-Fort Worth Intl. to Missoula Intl., returning Tue, Aug 5, priced at $360 found 5 days ago

Frequently asked questions

What route does flight number AA851 take?
You’ll be landing into Philadelphia, PA Airport (PHL-Philadelphia Intl.) from Los Angeles, CA Airport (LAX-Los Angeles Intl.) if you’re traveling on flight number AA851. You’ll be airborne for 5 hours and 14 minutes on this trip. It’s also good to note that the flight conveniently operates non-stop.
How often is AA851 on time?
Approximately 90% of AA851 flights arrive according to scheduled times — so if you’re traveling from Los Angeles, CA Airport (LAX-Los Angeles Intl.) to Philadelphia Intl. Airport (PHL), you can breathe easy knowing that you’ll reach your destination as quickly as possible. If your American Airlines flight is late, you’re likely to wait around 16 minutes. Due to the airline’s first-rate service, this route has a 3.45-star rating.
What kind of plane is on flight number AA851?
There’s a good chance you’ll be traveling aboard an Airbus A321 if you’re traveling on flight number AA851. This flight nearly always takes off from Los Angeles, CA Airport (LAX-Los Angeles Intl.) and lands at Philadelphia, PA Airport (PHL-Philadelphia Intl.).
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 AA851 flight with Travelocity, please visit our Customer Service Portal.