What’s in This Article
- Southwest Airlines International Destinations
- Southwest Airlines and Asian Markets
- Southwest Airlines Routes to Japan
- Benefits of Flying Southwest to Japan
- How to Book a Flight to Japan with Southwest
- Tips for Flying to Japan with Southwest Airlines
- What to Know Before You Book
- Frequently Asked Questions
Planning a trip to Japan and wondering if Southwest Airlines can get you there? The answer isn’t a simple yes or no. Southwest doesn’t fly to Japan on its own aircraft, but its interline partnership with All Nippon Airways (ANA), launched in March 2026, now lets you book a single-ticket connection from hundreds of U.S. cities to Japanese destinations. This guide explains exactly how that works and what it means for your trip.
Quick Answer
Southwest Airlines does not operate direct flights to Japan. Through its partnership with All Nippon Airways (ANA), launched in March 2026, you can book single-ticket itineraries that combine a Southwest flight to a U.S. gateway city with ANA service onward to Japan. Destinations include Tokyo, Osaka, and Nagoya.
Key Takeaways
- Southwest Airlines does not fly directly to Japan, but its ANA partnership enables single-ticket connections through U.S. gateway airports.
- Southwest operates international flights to Mexico, Central America, and the Caribbean on its own aircraft.
- The Southwest–ANA partnership lets you book through Southwest’s website, combining your domestic Southwest leg with ANA’s transpacific service.
- Rapid Rewards points apply to the Southwest segment of your trip; they do not extend to the ANA-operated portion.
- Other airlines, including United, Delta, American, Japan Airlines, and ANA directly, offer nonstop flights from the United States to Japan.
Southwest Airlines International Destinations
Southwest Airlines built its reputation on domestic routes, but it has gradually expanded its international offerings. The airline’s push into international travel began in 2014 with flights to destinations in Mexico and the Caribbean. That expansion let Southwest tap into growing demand for affordable international travel.
Today, Southwest serves several international destinations, including popular spots like Cancun, Aruba, and Montego Bay. Its approach mirrors its domestic strategy: low fares and a simple booking process. The addition of international routes has opened Southwest’s network to families seeking affordable vacations, business travelers watching costs, and adventurous travelers exploring new places.
Southwest’s international flights deliver the same service and efficiency passengers expect on domestic legs. As the airline evaluates new markets, its ANA partnership has created a path to Asia, particularly Japan, that didn’t exist before.
Southwest Airlines and Asian Markets
Asia represents a significant growth opportunity for Southwest as it diversifies its international portfolio. Demand for air travel between the United States and countries like Japan, South Korea, and China continues to rise, and airlines compete hard for that market share. Southwest’s ANA partnership gives U.S. travelers easier access to these destinations without requiring a separate booking.
Japan stands out as a particularly attractive destination. Its rich culture, strong economy, and deep ties with the United States make it one of the most popular long-haul destinations for American travelers. According to Southwest Airlines, the ANA partnership makes booking these trips straightforward through Southwest’s existing platforms.
Japan draws tens of millions of international visitors annually, with cities like Tokyo and Osaka consistently ranking among the world’s top tourist destinations. By connecting its network to ANA’s transpacific routes, Southwest gives travelers more budget-friendly entry points to Japan.
Southwest Airlines Routes to Japan
Note: The routes below reflect ANA partnership connections, not Southwest-operated flights. Southwest carries you to the U.S. gateway; ANA operates the transpacific leg to Japan.
| Departure City | Arrival City | Frequency | Distance (miles) |
|---|---|---|---|
| Los Angeles | Tokyo (via ANA) | Daily connections available | 5,456 |
| San Francisco | Osaka (via ANA) | Multiple weekly connections | 5,132 |
| Honolulu | Nagoya (via ANA) | Multiple weekly connections | 3,860 |
Southwest does not fly transpacific routes itself. Its interline partnership with ANA, launched in March 2026, lets travelers book seamless single-ticket connections. Southwest’s network reaches the U.S. gateway airports, and ANA takes you the rest of the way to Japan. Coordination between the two carriers covers airport slots, regulatory approvals, and baggage handling at shared gateway airports.
Southwest’s leadership sees Japan as a strong market because of its enduring popularity among American travelers. Routes focus on major cities, Tokyo and Osaka, which serve as cultural hubs and entry points for travel across Japan.
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Benefits of Flying Southwest Airlines to Japan
Using the Southwest–ANA partnership to reach Japan comes with real advantages. The biggest draw is cost. Southwest’s business model prioritizes efficiency, and that can translate into lower overall fares on the Southwest segment, making the combined trip more budget-friendly than booking premium carriers throughout.
Southwest’s flexible booking policies also appeal to travelers who need room to adjust plans. The airline charges no change fees on Southwest-operated flights, which is a meaningful advantage when coordinating a complex international itinerary. Keep in mind that Southwest’s policies apply only to the Southwest portion of your ticket; the ANA segment follows ANA’s terms.
Pro tip: Book as early as possible. Southwest’s no-change-fee policy gives you a safety net, but fare prices on both the Southwest and ANA legs rise as departure dates approach.
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How to Book a Flight to Japan with Southwest Airlines
Southwest does not offer standalone Japan flights, but booking a partnership itinerary through its website is straightforward. Enter your departure city and travel dates, then look for options that include the ANA segment to Japan. The booking flow bundles both legs into a single ticket.
Travel agencies and third-party booking platforms that partner with Southwest may also surface these combined itineraries. Sign up for Southwest’s email alerts or follow its social channels to catch promotional fares on partnership routes when they appear.
Warning: If you need to rebook a disrupted flight, the Southwest and ANA segments may follow different rules — confirm rebooking policies for both carriers before you travel.
Rapid Rewards points apply to the Southwest leg of your journey. They do not extend to the ANA-operated transpacific segment. If earning miles on the full journey matters to you, check whether ANA’s loyalty program, ANA Mileage Club, offers any earning opportunity on your ticket type.
If you want a nonstop flight with no connection, other carriers serve Japan directly from the United States. United Airlines, Delta Air Lines, American Airlines, and Japan Airlines all operate nonstop transpacific routes from multiple U.S. cities.
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Tips for Flying to Japan with Southwest Airlines
Book well in advance once your preferred travel dates open. Early bookings give you more fare options on both the Southwest and ANA legs. Flying during Japan’s off-peak seasons, outside cherry blossom season in spring and the Golden Week holiday cluster in early May, typically means lower prices and smaller crowds.
Japan has clear cultural norms around dress and behavior. Research what’s appropriate for the specific regions and venues on your itinerary. Understanding customs rules about what you can bring into Japan also prevents delays at immigration.
Learning a few basic Japanese phrases goes a long way in smaller cities and rural areas where English signage is limited. Apps like Google Translate with offline Japanese packs downloaded before your flight handle most day-to-day situations.
What to Know Before You Book
The Southwest–ANA partnership marks a meaningful shift in how budget-conscious travelers can approach Japan. Southwest handles the domestic connection to the gateway; ANA handles the long transpacific leg. The result is a single-ticket booking that removes the coordination headache of linking two separate reservations.
Travelers should weigh the benefits clearly. Southwest’s no-change-fee flexibility applies only to its own flights. ANA’s transpacific segment follows ANA’s separate policy on changes and cancellations. Knowing this distinction before you book prevents surprises if your plans shift.
Overall, the partnership lowers the barrier to Japan travel for travelers who fly Southwest regularly and want to extend their existing relationship with the airline into international territory. Keep an eye on Southwest’s website and promotional announcements for fare deals as the partnership matures.
Frequently Asked Questions
Does Southwest Airlines fly to Japan?
No. Southwest Airlines does not operate direct or nonstop flights to Japan. Through its ANA partnership, launched in March 2026, you can book a single-ticket connection: Southwest flies you to a U.S. gateway city, and ANA carries you onward to Japan.
Which airlines fly nonstop to Japan from the United States?
Several carriers operate nonstop transpacific flights, including United Airlines, Delta Air Lines, American Airlines, Japan Airlines (JAL), and All Nippon Airways (ANA). Departure cities vary by carrier; Los Angeles, San Francisco, and New York offer the broadest options.
Are there direct flights from the United States to Japan?
Yes. Multiple U.S. cities offer nonstop service to Tokyo (Narita/Haneda), Osaka, and Nagoya. Flight times range from roughly 9.5 hours from the West Coast to around 14 hours from East Coast cities.
Can I earn Rapid Rewards points on the ANA portion of my trip?
Rapid Rewards points apply only to Southwest-operated flights. The ANA segment of a partnership itinerary follows ANA’s own loyalty program, ANA Mileage Club. Check ANA Mileage Club terms to see whether your ticket earns miles on the transpacific leg.
What are the major international airports in Japan?
Japan’s main international airports are Narita International Airport (NRT) and Haneda Airport (HND) in Tokyo, Kansai International Airport (KIX) near Osaka, and Chubu Centrair International Airport (NGO) in Nagoya. Most long-haul flights from the United States arrive at NRT or HND.
Southwest’s ANA partnership opens a genuinely new door for travelers who want Japan without paying legacy-carrier prices on every leg. The key is understanding what Southwest controls and what ANA controls, so you set the right expectations before you book. With low-fare domestic connections to U.S. gateway airports and ANA’s established transpacific network handling the long haul, this partnership makes Japan more reachable than it was a year ago. Start by searching Southwest’s website for available connection dates, and compare the total fare against direct-route options from other carriers to find your best fit.
References
- Southwest Airlines Airline Partnerships — Southwest Airlines, 2026
- Southwest Airlines Baggage Information — Southwest Airlines, 2026
- Japan Inbound Tourism Statistics — Japan Tourism Agency, 2025