Quick Answer: Best Way from Khon Kaen to Udon Thani Airport
The best overall option is a direct minivan from Khon Kaen city center to Udon Thani Airport (UDT): total time ~1.5–2 hours, cost 250–400 THB (~7–12 USD) per person, with no transfers. For the cheapest route, take an ordinary train (50–80 THB) from Khon Kaen Railway Station to Udon Thani Railway Station, then a taxi (100–150 THB) to the airport — total ~150–230 THB (~4.5–7 USD), but allow 2.5–3.5 hours. For maximum comfort and speed, a private taxi costs 800–1,200 THB (~24–36 USD) and takes 1.25–1.5 hours door-to-door.
🚆 Train from Khon Kaen to Udon Thani (Then to Airport)
The train is a classic, budget-friendly way to travel between Khon Kaen and Udon Thani. Operated by the State Railway of Thailand (SRT), this route runs along the Northeastern Line and offers a relaxed journey through rice paddies and rural villages. Note: there is no direct train to Udon Thani Airport — you must take a taxi or songthaew from Udon Thani Railway Station to the airport (5 km, ~10 minutes).
Train Types & Schedule
Approximately 6–8 daily trains run from Khon Kaen to Udon Thani. Below is a comparison of the main types:
| Train Type | Duration | Ticket Price (THB) | Ticket Price (USD) | Frequency | Seat Comfort |
|---|---|---|---|---|---|
| Ordinary (No AC) | 2 h 45 min – 3 h 15 min | 50–80 THB | ~1.5–2.4 USD | 2–3 daily | Basic bench seats, fan-cooled |
| Rapid (Recommended) | 2 h 10 min – 2 h 30 min | 100–130 THB | ~3–3.9 USD | 3–4 daily | Reserved padded seats, fan/AC |
| Express / Special Express | 1 h 45 min – 2 h 10 min | 160–220 THB | ~4.8–6.6 USD | 1–2 daily | AC, reclining seats, meal service |
Step-by-Step: Train + Airport Transfer
- Board at Khon Kaen Railway Station – located on Pracha Samosorn Road, about 2 km from city center. Arrive 20 minutes early to buy tickets at the counter or via SRT e-Ticketing.
- Ride to Udon Thani Railway Station – enjoy the scenery; the train passes through Ban Phai and Non Sa-at stations. The Rapid train offers a snack cart.
- Exit at Udon Thani Station – located on Phosri Road, about 5 km south of the airport. Tuk-tuks and songthaews wait outside; negotiate the fare before boarding.
- Take a taxi or songthaew to Udon Thani Airport – taxi 100–150 THB (~3–4.5 USD), songthaew 40–60 THB (~1.2–1.8 USD). The drive takes 10–15 minutes.
Pros & Cons of the Train
- ✅ Pros: Very cheap; spacious seats; scenic; no traffic; reliable schedule.
- ❌ Cons: Requires transfer at Udon Thani station; slower than road options; ordinary trains have no AC; luggage storage is limited (overhead racks only).
Verdict: The Rapid train offers the best balance of cost and comfort for budget-conscious travelers who don't mind a short taxi hop at the end. Check live train schedules on 12Go.asia.
✈️ Domestic Flights: Why There's No Direct Flight (and What to Know)
Many travelers assume flying is an option, but there is no commercial flight between Khon Kaen and Udon Thani. The straight-line distance is only ~100 km (62 miles), and a flight would take just 15 minutes — too short for any airline to operate profitably. However, if you are connecting through Bangkok, here's how the numbers compare:
Hypothetical Flight via Bangkok (Not Recommended)
| Segment | Time | Cost (THB) | Cost (USD) |
|---|---|---|---|
| Khon Kaen (KKC) → Bangkok (BKK/DMK) | 1 h 05 min (flight) + 2 h airport waiting | 1,200–2,500 THB | ~36–75 USD |
| Bangkok → Udon Thani (UDT) | 1 h 10 min (flight) + 1.5 h connection | 1,000–2,200 THB | ~30–66 USD |
| Total (including ground transfers in Bangkok) | 5–7 hours | 2,800–5,500 THB | ~84–165 USD |
Compare that to a minivan (1.5 h, 250–400 THB) or a private taxi (1.25 h, 800–1,200 THB) — flying via Bangkok costs 10–20× more and takes 3–5× longer. The conclusion is clear: ground transport is the only sensible choice for this route.
When You Might Consider a Flight (Special Cases)
- You're already at Khon Kaen Airport (KKC) and need to reach a flight departing from Udon Thani (UDT) — but even then, a taxi is faster and cheaper than any air itinerary.
- You have a medical condition that makes long car rides difficult — but the taxi ride is only 1.25 hours, so flying offers no advantage.
Verdict: Skip the flight. The minivan or taxi is faster, cheaper, and far more practical. Book your ground transport in advance via 12Go.asia or a local provider.
🚌 Bus & Minivan: Best Value for Most Travelers
For the best combination of speed, cost, and convenience, the direct minivan (also called a "van" or "rod duan") from Khon Kaen to Udon Thani Airport is the top choice. Unlike the train, it drops you off right at the airport departure terminal. Public buses are even cheaper but require a local transfer at Udon Thani.
Option A: Direct Minivan (Khon Kaen → Udon Thani Airport)
- Duration: 1.5–2 hours
- Cost: 250–400 THB (~7.5–12 USD) per person
- Operators: Nakhonchai Air, Cherdchai Tour, and local co-ops
- Departure points: Khon Kaen Bus Terminal 1 (on Pracha Samosorn Road) and Bus Terminal 2 (on Mittraphap Road)
- Arrival: Direct drop-off at Udon Thani Airport (UDT) — departure hall, 2nd floor
- Frequency: Every 30–60 minutes from 05:00 to 19:00
Booking tip: Reserve your seat at the bus terminal counter or via 12Go.asia. Minivans are air-conditioned and can seat 9–13 passengers. Luggage space is limited to one large bag per person; extra bags may incur a small fee.
Option B: Public Bus (Cheapest, with Transfer)
- Duration: 1 h 45 min – 2 h 15 min (bus) + 15–20 min (transfer to airport)
- Cost: 80–120 THB (~2.4–3.6 USD) bus + 40–60 THB songthaew = 120–180 THB total
- Operators: Transport Co., Ltd. (government-run)
- Route: Khon Kaen Bus Terminal 1 → Udon Thani Bus Terminal (on Phosri Road)
- Transfer to airport: From Udon Thani Bus Terminal, take a songthaew (shared taxi, 40–60 THB) or taxi (100–150 THB) to the airport (6 km, 10 min).
Daytime vs. Evening Services
Daytime (05:00–18:00): Minivans run frequently; buses every 30–45 min. This is the easiest window for travel.
Evening (18:00–22:00): Minivans reduce frequency; buses run until about 21:00. After 22:00, you will likely need a taxi.
Late-night (22:00–05:00): No scheduled bus or minivan services. A private taxi or Grab is your only option.
Pros & Cons
- ✅ Pros: Minivan is direct to airport; cheaper than taxi; frequent departures; AC comfort.
- ❌ Cons: Minivan can feel cramped for tall passengers; bus requires transfer; luggage limit on minivans.
Verdict: The direct minivan is the sweet spot for most travelers — faster than the train, cheaper than a taxi, and hassle-free. Check bus schedules on BusTicket.in.th.
🚕 Taxi & Private Transfer: Fastest & Most Comfortable (But Priciest)
For travelers who value speed, privacy, and door-to-door service, a private taxi or pre-booked car from Khon Kaen to Udon Thani Airport is the premium choice. It's ideal for early morning flights, family groups, business travelers, or anyone with heavy luggage.
Typical Fares & Options
| Vehicle Type | Duration | Price (THB) | Price (USD) | Best For |
|---|---|---|---|---|
| Standard Sedan (4 seats) | 1 h 15 min – 1 h 30 min | 800–1,000 THB | ~24–30 USD | Solo / couple with 2–3 bags |
| SUV / Large Car (4–5 seats) | 1 h 15 min – 1 h 30 min | 1,000–1,300 THB | ~30–39 USD | Family with children / extra luggage |
| Minibus / VIP Van (9–12 seats) | 1 h 30 min – 1 h 45 min | 1,500–2,500 THB | ~45–75 USD | Group of 6–10 people / golf clubs |
How to Book
- Grab App: From Khon Kaen city center to Udon Thani Airport — 900–1,400 THB (~27–42 USD). Book 15–30 min in advance. Download Grab.
- Local taxi stands: At Khon Kaen Bus Terminal or Railway Station — negotiate the fare before departure. Expect 800–1,200 THB.
- Pre-booked transfer: Companies like Klook and 12Go.asia offer fixed-price private transfers with English-speaking drivers.
When a Taxi Makes Sense (and When It Doesn't)
- ✅ Choose a taxi if: You have a flight before 08:00 or after 21:00 (no minivans); you're traveling with 3+ people (cost per person becomes competitive); you have oversized luggage (sports equipment, musical instruments); you value privacy and comfort.
- ❌ Skip the taxi if: You're on a tight budget (minivan costs 70–80% less); you're traveling solo and don't mind sharing; you enjoy the train experience.
Verdict: A private taxi is the most convenient but most expensive option. For a solo traveler, the minivan offers better value. For a group of 3–4, the cost per person of a taxi is comparable to a minivan, making it a strong choice.
💰 Cost & Time Comparison: All Options at a Glance
Use this table to quickly compare every way to get from Khon Kaen to Udon Thani Airport. Best and Cheapest picks are highlighted.
| Mode | Total Time | Cost (THB) | Cost (USD) | Transfers | Comfort | Best For |
|---|---|---|---|---|---|---|
| ⭐ Direct Minivan | 1.5–2 h | 250–400 THB | ~7.5–12 USD | None | Good (AC, seat) | Best Overall |
| Private Taxi (sedan) | 1.25–1.5 h | 800–1,000 THB | ~24–30 USD | None | Excellent | Fastest / Family |
| Grab ride-hailing | 1.25–1.5 h | 900–1,400 THB | ~27–42 USD | None | Excellent | Convenience |
| 💰 Rapid Train + Taxi | 2.5–3 h | 200–280 THB | ~6–8.4 USD | 1 (taxi at Udon) | Good (train seat) | Cheapest Comfy |
| Ordinary Train + Taxi | 3–3.5 h | 150–230 THB | ~4.5–7 USD | 1 (taxi at Udon) | Basic (fan) | Ultra-budget |
| Public Bus + Songthaew | 2–2.5 h | 120–180 THB | ~3.6–5.4 USD | 1 (songthaew) | Basic (bus AC) | Cheapest Overall |
| Flight via Bangkok | 5–7 h | 2,800–5,500 THB | ~84–165 USD | 2+ (airports) | Good | Not recommended |
🏆 Best Value: Direct Minivan — fastest non-private option, no transfers, fair price.
🏆 Cheapest: Public Bus + Songthaew — 120–180 THB total, but requires a local transfer.
🏆 Fastest: Private Taxi — door-to-door in ~1.25 hours.
Where to Book Tickets
- Train: At Khon Kaen Railway Station or SRT e-Ticketing (nofollow).
- Minivan/Bus: At Bus Terminal 1 or 2, or via 12Go.asia (nofollow).
- Private Taxi: Book via Grab (nofollow) or local taxi hotline.
🧳 Traveler Tips & Local Insights for a Smooth Journey
Pro tips from frequent travelers on the Khon Kaen–Udon Thani route to help you avoid common pitfalls.
1. Luggage: Use the "Takkyubin" Baggage Service
If you have heavy suitcases, consider door-to-door baggage delivery (Takkyubin style) offered by Nim See Seng or Thailand Post. Drop your bags at a service point in Khon Kaen and have them sent directly to Udon Thani Airport (or your hotel). Cost is about 200–400 THB per bag (~6–12 USD) — well worth it if you're taking the train or minivan and don't want to wrestle luggage.
2. Station Navigation: Udon Thani Railway Station
Udon Thani Railway Station is a small, single-platform station. Taxis and tuk-tuks queue outside the main entrance. If you arrive by train and need a taxi to the airport, use the official taxi queue (look for the yellow stand) to avoid overcharging. The ride to the airport is ~5 km and takes 10–15 minutes.
3. Timing: Avoid Peak Hours on Highway 2
The Mittraphap Road (Highway 2) between Khon Kaen and Udon Thani can experience heavy traffic during:
• Weekday rush hours (07:00–09:00 and 16:30–18:30)
• Thai public holidays (Songkran in April, New Year) — traffic can double travel time.
• Long weekends when locals travel to/from Udon Thani.
If you're on a tight schedule for a flight, add 30–45 minutes buffer.
4. Booking in Advance: When It's Essential
- Minivan: Reserve 1 day ahead during weekdays, 3–5 days ahead during holidays.
- Train: Rapid and Express seats sell out on weekends — book at the station 1–2 days in advance or use SRT e-Ticketing.
- Private taxi: Book 12–24 hours ahead for early morning (05:00–07:00) pickups.
5. What to Eat & Drink on the Way
The Rapid and Express trains have a snack cart offering coffee, soft drinks, and packaged snacks. At Khon Kaen Railway Station, try the Khao Tom (rice soup) from the stall on platform 1 — a local favorite. If taking a minivan, grab a bottle of water and some Khanom Bueang (Thai crispy pancakes) from the terminal shop.
6. SIM & Connectivity
The entire route from Khon Kaen to Udon Thani has strong 4G/5G coverage on all Thai networks (AIS, TrueMove, dtac). If you need a local SIM, buy one at Khon Kaen Bus Terminal 1 or at the airport. For international travelers, an eSIM from Airalo or Nomad works seamlessly.
Final tip: Double-check your flight terminal at Udon Thani Airport — domestic and international departures are in the same building but on different floors. Allow 1 hour for domestic and 2 hours for international flights after you arrive.
❓ FAQs: Khon Kaen to Udon Thani Airport
1. Is there a direct train from Khon Kaen to Udon Thani Airport?
No, the train runs only from Khon Kaen Railway Station to Udon Thani Railway Station (about 5 km from the airport). You then need to take a taxi (100–150 THB) or a songthaew (40–60 THB) to reach Udon Thani Airport. The total train+taxi journey takes about 2.5–3.5 hours.
2. What is the cheapest way to get from Khon Kaen to Udon Thani Airport?
The cheapest option is the ordinary train (50–80 THB) plus a taxi from Udon Thani station to the airport (100–150 THB), totaling 150–230 THB (~4.5–7 USD). Alternatively, a public bus from Khon Kaen to Udon Thani bus station (80–120 THB) plus a local songthaew to the airport (40–60 THB) costs about 120–180 THB (~3.6–5.4 USD).
3. How long does it take to get from Khon Kaen to Udon Thani Airport by taxi?
A direct taxi from Khon Kaen city center to Udon Thani Airport takes approximately 1 hour 15 minutes to 1 hour 30 minutes, depending on traffic. The distance is about 115 km via Highway 2 (Mittraphap Road). The fare ranges from 800 to 1,200 THB (~24–36 USD).
4. Are there overnight bus services from Khon Kaen to Udon Thani?
Standard intercity buses on the Khon Kaen–Udon Thani route run from early morning (05:00) until late evening (around 22:00). There is no dedicated overnight bus with sleeping seats, as the journey is only 1.5–2 hours. For late-night travel, a taxi or pre-booked minivan is recommended.
5. Can I book a Grab or ride-hailing service from Khon Kaen to Udon Thani Airport?
Yes, Grab is available in Khon Kaen for point-to-point rides to Udon Thani Airport. Expect to pay 900–1,400 THB (~27–42 USD) depending on demand and vehicle type. Booking in advance via the app is recommended, especially for early-morning departures.
6. What is the best transportation option from Khon Kaen to Udon Thani Airport for a family?
For families, a direct minivan (250–400 THB per person) or a private taxi (800–1,200 THB total) is most convenient. Minivans offer air-conditioning and door-to-door service to the airport departure drop-off. For families with young children, a private taxi eliminates the need to handle luggage during transfers.
7. How far is Khon Kaen from Udon Thani Airport, and what are the transfer options?
Khon Kaen city center is approximately 115 km south of Udon Thani Airport (UDT). Transfer options include: train (2.5–3.5 h, 150–350 THB with taxi connection), direct minivan (1.5–2 h, 250–400 THB), public bus (2–2.5 h, 120–180 THB with songthaew connection), or private taxi (1.25–1.5 h, 800–1,200 THB).
8. Is it better to take the train or a minivan from Khon Kaen to Udon Thani Airport?
A minivan is better for speed and convenience (1.5–2 h, door-to-airport), while the train is better for budget travelers (from 150 THB total). The train offers more legroom and a scenic ride, but requires a taxi transfer at Udon Thani station. For most travelers, the minivan offers the best balance of cost, time, and comfort.