China Domestic Flights: Booking Tips, Airlines, and Hacks (2026)

Beijing to Kashgar takes about five and a half hours in the air, or roughly thirty hours on the fastest trains. Distances like that explain why Chinese airlines carried 770 million passengers in 2025, up 5.5 percent year on year, and why CAAC, the civil aviation regulator, set a target of around 810 million for 2026 (official statistics published on gov.cn, January 2026). The network behind those numbers is the world’s second-largest domestic air market, served by more than 260 civil transport airports.

Flying inside China is not hard, but it runs on different assumptions than Europe or North America. Some cities have two airports, and tickets are sold by airport code rather than city name. Budget fares quietly exclude checked bags. Payment pages sometimes want a Chinese phone number. And a homegrown jet, the COMAC C919, now turns up on major routes whether you planned for it or not. Get four or five details right before booking and the system works fine. Get them wrong and you end up at the wrong airport with a suitcase that was never in the fare.

The Airlines: Who Flies Where

The Big Three

Air China (中国国际航空) is the flag carrier, based at Beijing Capital (PEK) and a Star Alliance member, so miles earn and burn with United, Lufthansa, and the rest of the alliance. Its network reaches deepest into smaller western cities, and anything starting in Beijing usually has the most Air China frequencies.

China Southern Airlines (中国南方航空) runs the country’s largest fleet out of Guangzhou Baiyun (CAN), with Beijing Daxing (PKX) as a second hub. It belongs to SkyTeam, pairing with Delta and Air France. If you are flying anywhere in the south, the Pearl River Delta, Hainan Island, Guangxi, Southern almost certainly has the most options.

China Eastern Airlines (中国东方航空) owns Shanghai. Both of its hubs, Pudong (PVG) and Hongqiao (SHA), plus its Shanghai Airlines subsidiary, make it the densest network out of the city, also under the SkyTeam umbrella. For a Shanghai connection, it is the default.

The Premium Independent

Hainan Airlines (海南航空) is the exception to the state-owned pattern: a private carrier that holds a Skytrax 5-star rating, the same tier Skytrax assigns to Singapore Airlines and Qatar Airways (check the current rating at skytrax.com as of 2026-08). Despite the name, its network stretches well beyond Hainan island, with strong operations from Beijing and Xi’an. Traveler reports consistently rate its cabins, meals, and crew above the Big Three. If fares are within ¥100 or so of a competitor, take Hainan. It sits outside the global alliances but runs its own loyalty program and codeshares with several international airlines.

The Budget Operators

Spring Airlines (春秋航空) is China’s largest low-cost carrier, in the Ryanair mold. Base fares can be startlingly low; traveler reports regularly cite Shanghai to Beijing in the ¥300 to 400 range. The catch is that everything else is an add-on: checked bags, seat selection, meals, priority boarding. Legroom is tight, nothing is free, and on some routes Spring serves a neighboring city instead of the headline destination (Shijiazhuang instead of Beijing, for example), so read the airport name, not just the city.

9 Air (九元航空) flies from Guangzhou, West Air (西部航空) from Chongqing, and Lucky Air (祥鹏航空) from Kunming. Same model, smaller networks.

One rule covers all of them: price the checked bag into the comparison before you get excited. A ¥300 fare plus a ¥150 bag stops being cheap the moment a full-service carrier’s sale fare lands at ¥480 with a bag included.

The 20 kg allowance applies to standard economy fares on full-service carriers. The deepest discount fare buckets on those same airlines can exclude checked bags too, so read the fare rules on the booking page rather than trusting the airline logo.

An evening departure. The cheapest fares on trunk routes tend to be on late-night red-eyes, not on the scenic evening flights.

Booking Strategy: When and How to Buy

The timing sweet spot

Off-peak (roughly March to June and September to November, holidays excluded): book 15 to 20 days out. Airlines open their lowest fare buckets about three weeks before departure, then raise prices as the date approaches. Booking more than 30 days ahead often costs more, because only the higher fare classes are on sale that early.

Peak (Chinese New Year, the October Golden Week, July and August): book 2 to 3 months out, or as soon as your dates are firm. The scale of peak demand is hard to overstate. The 2026 Spring Festival travel rush, the 40-day Chunyun (春运), produced a record 9.4 billion inter-regional trips across all transport modes, including 94.39 million by air (CGTN, March 2026). Fares in those weeks only go one direction.

Cheapest days and times

Tuesday and Wednesday departures typically price 15 to 25 percent under Friday or Sunday equivalents, according to fare trackers. Late night is cheaper still: flights leaving between 10 PM and 6 AM can run 20 to 40 percent below daytime fares. The trade-offs are real. Red-eyes face less congestion and tend to run on time, but you land at 2 AM with tired legs and no metro.

Airline member days

The major airlines run monthly flash sales on fixed “member day” dates, with selected routes dropping to ¥99 to 199:

• Air China: 8th of each month
• China Eastern: 18th of each month
• China Southern: 28th of each month
• Hainan Airlines: 8th and 28th of each month

Sales open on the airline’s own app, usually around 10:00 Beijing time, and the good routes sell out the same day. Confirm the current dates in the app as of 2026-08, because airlines reshuffle these promotions periodically.

Where to book

Trip.com (携程) is the easiest option for foreign visitors: full English interface, international Visa and Mastercard accepted, fares aggregated across all major airlines.

Airline official apps often beat third parties on close-in fares and handle refunds and changes with less friction. The catch: registration may require a Chinese phone number, and some payment pages prefer Alipay or WeChat Pay over foreign cards.

Qunar (去哪儿) and Fliggy (飞猪) are the big Chinese aggregators. Fliggy plugs into Alipay; Qunar tends to surface the widest range of budget fares.

Umetrip (航旅纵横) is not a booking tool at all, but install it anyway. Built on official CAAC flight data, it pushes gate changes and delay alerts faster than airport screens, shows the aircraft’s earlier sectors (the best predictor of an incoming delay), and displays historical on-time rates per flight. VariFlight (飞常准) does the same job; pick one.

Bags, Liquids, Power Banks

Baggage policy is where the cheapest-looking ticket becomes the most expensive one.

Full-service airlines (Air China, China Southern, China Eastern, Hainan, Xiamen, Sichuan): standard economy fares include 20 kg of checked baggage, business class 30 to 40 kg. The rock-bottom fare classes on these carriers sometimes exclude bags entirely. Verify on the fare page at booking.

Budget airlines (Spring, 9 Air, West Air, Lucky Air): the base fare never includes a checked bag. Pre-purchasing online runs roughly ¥80 to 200 depending on airline, route, and weight; the airport counter price is substantially higher, often ¥200 to 300.

Carry-on follows a standard ceiling: one piece, 7 kg maximum, no larger than 20 x 40 x 55 cm. Budget carriers weigh bags at the gate, and traveler reports of gate-check fees are constant. If your pack looks heavy, it will be weighed.

Liquids: China’s domestic rules are stricter than the international norm. You generally cannot take liquids through security at all; the permitted exception is small cosmetics containers of 100 ml or less, one per type, subject to inspection. Buy water after security.

Power banks and batteries: spare lithium batteries and power banks go in cabin baggage only, never checked. The rating must be 100 Wh or below; between 100 and 160 Wh you need airline approval, and above 160 Wh they are banned. Unrated power banks get confiscated at screening, so if yours has no label, assume it is gone.

Alcohol in checked bags follows CAAC limits: under 24% ABV has no fixed quantity cap (within reason, retail packaging), 24% to 70% ABV is capped at 5 liters per person, and over 70% ABV is prohibited.

A departure hall at a major hub. At megahubs like Beijing Daxing and Shanghai Pudong, the walk from security to the gate alone can take 20 minutes.

The Dual-Airport Problem

Three cities run two major airports each, and the wrong code can add an hour or more to your day.

Beijing. Capital (PEK) sits in the northeast, reasonably close to the center, served by the Airport Express subway line. Daxing (PKX) opened in September 2019, about 46 km due south of the city center, and serves as China Southern’s fortress hub. It is newer and less crowded, but farther from most sights; its own airport express runs to Caoqiao station on Metro Line 10. A taxi transfer between the two airports takes at least 90 minutes. If you are connecting between them, budget half a day.

Shanghai. Pudong (PVG) carries most international traffic plus domestic; Hongqiao (SHA) is overwhelmingly domestic and much closer to downtown, attached to the main rail station. Metro Line 2 links the two airports in about 70 to 90 minutes. When both airports serve your route, Hongqiao is almost always the more convenient one.

Chengdu. Shuangliu (CTU) sits about 16 km southwest of downtown. Tianfu (TFU), opened in 2021, is roughly 50 km to the southeast (see the airport’s Wikipedia entry). Most carriers moved to Tianfu, but the split is messy: Tibet Airlines runs all its Chengdu flights from Shuangliu, while Air China and Sichuan Airlines operate at both. Some airlines, Sichuan among them, offer free baggage transfer between the two airports for connecting passengers; confirm directly with the airline as of 2026-08. Read the three-letter code on every segment.

Shenzhen and Guangzhou each have one big airport (SZX and CAN), but the cities sit close enough that travelers sometimes fly into one and take the roughly 30-minute high-speed train to the other.

Navigating the Airport

Check-in typically closes 30 to 45 minutes before departure on domestic flights. Passport is your ID; have it out. With a bag to check, arrive at least 60 minutes early, 90 at megahubs and on budget carriers.

Security is thorough and literal. Laptops out. Power banks out and screened separately. Belt and often shoes off. The liquids rule above is enforced without much negotiation, and screening officers do occasionally re-weigh cabin bags.

Boarding gates appear about 30 minutes before departure and may be a long hike. At Daxing and Pudong, gate-to-security walks past 20 minutes are normal.

Meals: full-service carriers serve a hot meal or substantial snack on flights over roughly 90 minutes. Sichuan Airlines has a genuine reputation for its food (chili-oil dishes show up regularly in traveler reports); results elsewhere are edible at best. Budget carriers sell food or serve nothing. Bring your own.

Entertainment on domestic routes is patchy. New aircraft on trunk routes have seat-back screens; older planes and short hops have none. Download something.

Seats: window and aisle letters depend on the aircraft. Narrowbodies usually put windows at A and F, widebodies at A and K, but the seat map on the booking page shows the real layout for your specific flight. Exit rows carry extra legroom and, on some airlines, an extra charge.

The Rise of the C919

China’s homegrown narrowbody, the COMAC C919, entered commercial service with China Eastern in May 2023 and is now a regular sight on trunk routes. China Eastern is the launch customer and the biggest operator, with 14 C919s in its summer 2026 schedule. Air China and China Southern each took their first aircraft in August 2024, and Air China flies the type from Beijing Capital on routes that have expanded to include Hangzhou, Shanghai Hongqiao, and, from March 2026, Xiamen. In January 2025 the C919 began scheduled service on the Shanghai Hongqiao to Hong Kong route (flights MU721 and MU722), its first regular cross-border operation, per official reporting on gov.cn.

The ramp is slow. Chinese airlines had penciled in 33 combined C919 deliveries for 2026 (Aviation Week), but filings reviewed by Reuters showed only three jets shipped in the first quarter. With a capacity of up to 158 seats, the aircraft sits in the A320neo and 737 MAX class; traveler reviews describe a quiet, roomy cabin that is at worst unremarkable. You will not usually get to choose the C919. It will find you, and that is fine.

High-Speed Rail vs. Flying

For routes where the train takes under four hours, take the train. Stations sit downtown, baggage limits barely exist, security is a quick ID scan, and schedules hold up in weather that grounds planes.

• Beijing to Shanghai: about 4.5 hours by the fastest G-trains, versus a 2.5-hour flight plus airport time. Roughly a wash on total time; the train is less hassle.
• Guangzhou to Shenzhen: 30 minutes by rail. No contest.
• Chengdu to Chongqing: about 1 hour. Train.
• Shanghai to Nanjing: about 1 hour. Train.
• Beijing to Xi’an: about 4.5 hours by rail, competitive with flying door to door.

Past the four-hour mark, flying pulls ahead. Beijing to Urumqi is around 3.5 hours in the air against roughly 30 hours by train. Guangzhou to Harbin is about 4 hours flown versus about 12 hours on the fastest high-speed trains. Shanghai to Chengdu runs 3 hours by air, 11 by rail. If you have more than a day to burn, an overnight sleeper train can double as a hotel night, but on pure time, the plane wins.