2026 flight vs road comparison
Same-day flight loop to Phnom Penh versus the Moc Bai road run from Saigon. Real 2026 flight prices, total time door to door, the new pre-arrival declaration at Tan Son Nhat, and which one suits your situation.
The short answer
You can reset your Vietnam visa by flying out and back, or by driving to the Moc Bai border. The flight loop to Phnom Penh runs about 10 to 12 hours door to door and costs roughly 4,200,000 VND, about 165 USD, if you handle the e-visa yourself. The road run with the Saigon service costs 5,300,000 VND, about 199 USD all in, with transport, both visas, and someone walking you through the border.
The price gap is smaller than people expect. The flights are genuinely cheap, but you still pay the Cambodia visa and the Vietnam e-visa, and the airport transfers eat into the savings. Where the two really differ is flexibility. On the road run, the e-visa can be filed and rushed at the border, with approval in as little as an hour. On a flight run, your new e-visa must be approved before you board, because you re-enter Vietnam the same day.
There is also a new rule for flight runners since April 2026: anyone landing at Tan Son Nhat must file the free pre-arrival declaration at prearrival.immigration.gov.vn within 72 hours of arrival and show the QR code at immigration. Land crossings at Moc Bai do not require it yet. More on that below.
The flight options
Phnom Penh is the practical choice for a visa run, because the flight is barely an hour. Tan Son Nhat to the new Techo International Airport, KTI, is about 200 kilometers and 55 minutes to 1 hour 10 minutes in the air. Four carriers fly it non-stop: Vietnam Airlines, Vietjet, Air Cambodia, and Cambodia Airways. A good return fare lands around 2,000,000 VND, about 79 USD, and a typical fair price is closer to 2,800,000 VND. Vietjet opens one-way seats from about 700,000 to 1,000,000 VND before bags and taxes, so the headline numbers look small until you add a checked bag and the fees.
Bangkok is the longer version of the same idea. The flight runs about 1 hour 35 minutes to 1 hour 55 minutes, and round trips start around 154 USD with Thai AirAsia or Vietjet, with typical prices in the 115 to 215 USD range depending on the season. Doable as a same-day loop, but tight. Most people who fly to Bangkok for a stamp turn it into an overnight trip, which is its own kind of minibreak.
One detail that catches people: all Phnom Penh flights now land at Techo, which sits 20 to 24 kilometers south of the center. The old city-side airport no longer takes commercial flights. A taxi or Grab into the city runs about 260,000 to 520,000 VND, so budget for that on both ends of the loop.
Hour by hour
A same-day flight run needs an early outbound and an afternoon return, with enough gap between them that a delayed inbound does not sink the whole plan. A realistic version:
05:00 arrive at Tan Son Nhat, check in for the early flight. You get your Vietnam exit stamp when you clear departure immigration.
07:00 depart. One hour in the air, no time zone change.
08:00 land at Techo. Clear Cambodian immigration, pay the visa on arrival at the counter if you need one, roughly 30 USD for most nationalities.
09:30 back at departures, check in for the return flight. The airport is the waiting room for the next two hours.
12:00 depart KTI, land at Tan Son Nhat around 13:00.
13:30 clear Vietnam immigration on your new e-visa, grab the pre-arrival QR code if the officer asks, and you are out by 15:30 at the latest, back in District 1 around 16:00.
That is roughly 11 hours from your doorstep to your doorstep, and it assumes the flights run on time. The margin for error lives in the middle of the day, which is why an overnight version in Phnom Penh is the more relaxed option: fly out in the evening, sleep, fly back the next morning. The hotel costs 25 to 60 USD, and the run stops feeling like a race.
The road alternative
The road run from Saigon to Moc Bai is about 80 kilometers each way, roughly two hours on QL22. With the service it is a scripted day: pickup before sunrise, the driver and the Tay Ninh fixers handle the crossing order on both sides, lunch happens in Tay Ninh or just across the border, and you are back in the city by early evening. The full day runs about 12 hours.
The all-in price is 5,300,000 VND per traveler, about 199 USD, covering transport, the 90-day e-visa, and the Cambodia visa at Bavet. The step-by-step page walks through every window in order: the QL22 drive, the Moc Bai exit, the Bavet visa counter, and the re-entry that activates the new visa.
The big flexibility advantage: the e-visa does not need to be approved before you leave. The border desk files your application the moment your exit is stamped, and rush tiers can bring approval down to about an hour. If your visa situation is urgent or your documents are not ready, the road run keeps working. A flight run cannot do that, because you need the approval before you board the return leg.
The trade-off is the day itself. Four hours on the highway, the border heat, and the fixeders doing the queueing for you. Some people genuinely prefer the airport version. Others never want to see QL22 again after the first run.
Side by side, per traveler
Flight prices below are the realistic mid-range for 2026, not the lowest ever seen. Road prices match the booking form on this site.
| Item | Road run (service) | Flight run, DIY |
|---|---|---|
| Transport, door to door | 2,000,000 VND (79 USD) | Flights + taxis, about 2,300,000 VND (90 USD) |
| Vietnam 90-day e-visa | 2,400,000 VND (95 USD) with handling | about 650,000 VND (25 USD), government fee, filed yourself |
| Cambodia entry | 1,100,000 VND (43 USD) with handling | about 770,000 VND (30 USD), visa on arrival at KTI |
| Realistic total | 5,300,000 VND (199 USD) | about 4,200,000 VND (165 USD) |
Add an overnight hotel in Phnom Penh and the flight total rises to roughly 5,000,000 VND, about 195 USD, which is close to the road bundle. Add a checked bag to a Vietjet basic fare and the flight total climbs again. The honest summary: flying saves a little money only if you do everything yourself, and the gap shrinks to nothing the moment you buy convenience on either side.
The road bundle's 2,400,000 VND e-visa includes the desk doing the upload, the submission at the moment of exit, monitoring, and chasing until approval, which is why it sits well above the 25 USD government fee. The cost page breaks every line item down in VND and USD.
Time and stress
The road run is about 12 hours door to door: two hours each way on the highway, plus the border crossing itself, which the fixers keep under two hours on a normal day. The same-day flight loop is roughly 11 hours when the schedule holds: the same two airport check-ins, the same immigration queues, just with the drive swapped for waiting rooms.
The stress profile differs. On the road, the risk points are the QL22 traffic and the border crowd, and the fixers absorb most of both. On the flight, the risk points are the e-visa approval arriving on time and the return flight being on schedule. A delayed inbound means you burn the buffer you thought you had, which is why experienced flight runners book the earliest outbound and the latest reasonable return.
Comfort is where flying wins. No four hours on a highway in the heat, no border dust, air conditioning the whole way. For someone who hates the drive, the flight loop is the gentler day even when the numbers say otherwise.
New for 2026
Since 15 April 2026, foreign nationals landing at Tan Son Nhat must complete a free digital pre-arrival declaration before clearing immigration. You file it at prearrival.immigration.gov.vn, within 72 hours of your flight landing, and the system issues a QR code that the officer scans at the counter. It replaces the old paper arrival card. It is not a visa and does not replace the e-visa, and it applies whether you arrive on an e-visa, a visa exemption, or any other entry document.
The rollout has been airport by airport. Phu Quoc joined in early June, then Hanoi and Da Nang, then Nha Trang. For a visa runner the practical version is simple: if you fly back into Vietnam, check the portal and file within three days of landing, save the QR code, and have it ready at the counter. Filing takes under five minutes once you have your flight number and accommodation address.
Land crossings at Moc Bai do not require the declaration as of September 2026. The portal does have a land mode and a point-of-entry field, which signals the system will reach border checkpoints eventually, but no enforcement date has been confirmed for Moc Bai. The road run still works exactly as it did before this change.
This is the detail that quietly tips the balance for a lot of runners. If you fly, you add the declaration to your pre-flight checklist. If you drive, nothing changes. The step-by-step guide covers the land crossing in full if you want the exact window-by-window sequence.
Which one, then
Choose the flight loop when your new e-visa is already approved, you have the spare time for airport formalities, and the QL22 drive is the part of a visa run you dread. It also suits people who want a night in Phnom Penh out of the deal, which turns an errand into a short trip.
Choose the road run when your visa situation is not fully settled. If the e-visa is still processing, the border desk can file and rush it on the spot, with approval in as little as an hour. That flexibility is the single biggest reason runners stick with the road. It also suits families, anyone carrying a lot of luggage, and first-timers who want one fixed price and someone else handling both borders.
A middle path exists: take the service to Moc Bai for the exit stamp, spend the night in Cambodia, and come back the next day. That is the relaxed version of the road run, and the Laos run guide covers the longer route for people who want a different stamp entirely.
FAQ
Not by much. The road bundle is 5,300,000 VND, about 199 USD all in. A DIY flight run lands around 4,200,000 VND, about 165 USD, when you file the e-visa yourself. The flights are cheap; the two visa fees and airport transfers close most of the gap.
Yes, about 10 to 12 hours door to door. The new e-visa must be approved before you leave Vietnam, because you re-enter the same day. The road run has more flexibility: the border desk can file and rush the e-visa on the spot.
Yes, unless your nationality is exempt. Visa on arrival at Phnom Penh airport is about 30 USD for most nationalities; the e-visa about 36 USD filed ahead. Flying to Bangkok means clearing Thai immigration instead, visa-free for most passports.
Since 15 April 2026, foreign arrivals at SGN file a free digital declaration at prearrival.immigration.gov.vn within 72 hours of landing and show the QR code at immigration. It replaces the paper arrival card. It is not a visa.
Not yet. The portal has a land mode and the rollout is airport by airport. As of September 2026, Moc Bai crossings run on the normal stamp workflow. The system is expected to reach border checkpoints, so check the portal before you cross.
For a first run, the road service is usually calmer: one fixed price, fixers handle both borders, e-visa filed at the border. Flying avoids the highway but requires the e-visa approved in advance and adds airport dead time on both ends.
Connected routes
If the flight option does not fit, the road run pages cover every version of the Moc Bai crossing in detail:
Step-by-step guide
The full Moc Bai walkthrough, window by window, with the four things that actually go wrong.
Visa run bus
Shuttle pickup points and the Ben Xe Mien Dong public coach, for the budget version of the road run.
Cambodia visa at Bavet
Nationality list, fees, and what to prepare before the Cambodia side of the crossing.
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