Choosing the best airlines in the USA for international flights can make a major difference to your travel experience. Long-haul journeys require more than a competitive ticket price. Travelers should consider route networks, flight reliability, cabin comfort, baggage policies, loyalty programs, airport connections, and the quality of business-class services.
For travelers flying from the United States to Europe, Asia, Australia, Latin America, or other international destinations, several U.S. airlines stand out. In particular, Delta Air Lines, United Airlines, American Airlines, and Alaska Airlines offer strong options for international travelers.
1. Delta Air Lines
Delta Air Lines is one of the strongest choices for international travelers looking for a combination of reliability, comfort, and customer experience. The airline has a large network connecting major U.S. cities with destinations across Europe, Asia, Latin America, and other regions.
Delta has also received strong recognition in recent airline rankings. The Points Guy named Delta the best U.S. airline in its 2026 rankings for the eighth consecutive year, citing its operational performance and overall travel experience.
For travelers interested in premium travel, Delta One provides a business-class option on many long-haul routes.
Best for: Premium travelers, frequent flyers, and passengers who prioritize service and reliability.
2. United Airlines
United Airlines is arguably one of the best airlines in the USA for international flights if your biggest priority is having a broad international network.
United has particularly strong coverage across the Pacific and Atlantic. Its Star Alliance membership also gives passengers access to a huge network of partner airlines around the world. Recent industry comparisons continue to identify United as a leading U.S. carrier for international reach.
United Polaris business class is another attraction for travelers taking long-haul flights. The airline is also investing in upgraded aircraft and premium cabins for international routes.
Best for: International route selection, Europe, Asia, Australia, and Star Alliance connections.
3. American Airlines
American Airlines is another major choice for international travel from the United States. Its extensive domestic network makes it convenient for passengers who need to connect from smaller U.S. cities before continuing overseas.
American has particularly strong connections to Latin America and the Caribbean, supported by its major Miami hub. The airline is also a member of the oneworld alliance, giving travelers additional international connections through partner carriers.
American’s international fleet includes long-haul aircraft such as the Boeing 787, while its premium Flagship services provide upgraded experiences on selected routes.
Best for: Latin America, Caribbean travel, oneworld connections, and travelers near major American hubs.
4. Alaska Airlines
Alaska Airlines has traditionally been known for its strong domestic network, particularly on the U.S. West Coast. However, its international ambitions are growing significantly.
Following its acquisition of Hawaiian Airlines, Alaska is expanding its long-haul international strategy. The airline plans to substantially increase its intercontinental network from Seattle and is targeting destinations in Europe and Asia.
This makes Alaska increasingly interesting for travelers based on the West Coast who want international flights without relying exclusively on the traditional largest U.S. carriers.
Best for: West Coast travelers, Pacific routes, and passengers interested in Alaska’s expanding international network.
How to Choose the Best U.S. Airline for International Travel
The right airline depends heavily on your departure airport and destination. For example, United Airlines may be an excellent choice for travelers heading to Asia, while American Airlines can be particularly convenient for Latin America. Delta is attractive for travelers who value a polished overall experience, while Alaska is becoming increasingly competitive for Pacific and international travel from the West Coast.
Before booking, compare the total fare rather than just the advertised ticket price. Check baggage allowances, seat-selection fees, connection times, airport locations, and the rules associated with basic economy.
You can also explore our guide to the best airlines for long-haul international flights for more information about choosing an airline for extended journeys.
Final Thoughts
The best airlines in the USA for international flights depend on your destination, departure city, budget, and preferred travel experience. Delta stands out for overall service and reliability, United is especially strong for international network coverage, American offers excellent access to Latin America and oneworld partners, and Alaska is rapidly expanding its international presence.
For the best result, compare several airlines before booking and consider both the flight itself and the complete travel experience. A slightly higher fare may be worthwhile if it provides a better schedule, fewer connections, improved baggage options, or a more comfortable long-haul cabin.
