Ayuthaya you can do by tour as well as by yourself.
If you do it by yourself, in my opinion it´s better to go there by bus then by train.
Frequent departures from the northern bus terminal (Morchit 2), the last stop is about 1 block from the historic area, depending on traffic 1-2 hours, 100 baht.
Most sights are within easy walking from the busstop.
From Mo Chit BTS and MRT station by bus A1 (also from Don Muang Airport), from Khao San bus 3 (bus stop for Phra Arthit Pier).
Northern Bus Terminal
Take from here bus to North provinces also and provinces in Thailand that located north from Bangkok.
Kampaengphet 2 Rd, Bangkok Tel: 0-2936-2852-66 ext. 614 0-2936-3670
First Photo: Inside intercity bus
Second photo: Mo Chit - Chatouchak Bus Station
Third photo: Mo Chit - Chatouchak Bus Station
Forth photo: Mo Chit - Chatouchak Bus Station
Fifth photo: Mo Chit - Chatouchak Bus Station
Take a bus to south Thailand and provinces from south and from central. For example you will find bus here for: Chumphon, Krabi, Nakhon Si Thammarat, Narathiwat, Pattani, Phang Nga
Phatthalung, Phuket, Ranong, Satun, Songkhla, Surat Thani, Trang, Yala
and for provinces in the way to south that they belong to Central Thailand: Prachuap Khiri Khan, Phetchaburi, Samut Sakhon, Samut Songkhram
Boromratchchonnani Rd, Bangkok Tel: 0-2435-1200, 0-2435-1199
Name: Sai Tai Taling Chan
Attraction Type: Southern Bus Terminal
First Photo: Bus is comming to the station
Second photo: People and shops
Third photo: Intercity buses
Forth photo: The building in the station
Fifth photo: A small garden near the station
Pattaya is a beach resort town around 140Km Southeast of Bangkok. You can take the BTS Sky train to Ekkamai Station, and take a long-distant bus from Eastern Bus Terminal (Ekkamai) to Pattaya. It takes around 2 hours to reach Pattaya beach town.
Frequency: 30 - 40 minutes.
Fare: 124 Baht/ person.
You can buy a bus ticket at an assigned counter in the Bus Terminal.
Other bus terminals have same route but Ekkamai Station is the most convenient among all the bus terminals.
Check out the Pattaya Bus Website to find out more!
For the really popular tours, the tour companies usually uses the big tour buses and the big tour buses in thailand are really big! most are of the double decker capacity! these big tour buses means the cheapest tour fares for a particular tour as the buses can accomodate up to 60 people unlike the small tour vans where it can only have up to 18 people hence the cheaper price. the only disadvantage of the big tour buses is that the tour guides are really strict with schedules as they havea large group on their hands hence there is not much leeway on the time for activities like shopping or taking pictures and videos of the areas you are going.
Two things to say about leaving BK from Mochit.
One, I went there on the skytrain the first time, and walked from the skytrain to the station. BAD idea, it's very far and hard to find.
The second time I planned to get a taxi. When I got there, no one wanted to take me. I eventually found one who would do it on the meter, but he turned left instead of right and drove away from Mochit, then zigzagged back (I know as I previously walked) to double the fare.
When I got there I wanted to go to station 1 in central Korat, rather than station two, which is out of town (I'm disabled). I went to the recommended counter (53 (Air Korat)) but she told me to buy the ticket from the next window, where they swore their bus went to the central station one.
So I ended up stranded at night, outside the city, unable to use motorbikes due to my legs, as they'd lied, and the ticket, in Thai, had the number two on it, obviously meaning station two.
My advice is, research before you get there which window/s you need, then stick to it (there are hundreds of windows), avoid air korat, and perhaps take the train?
Northeastern Bus Terminal
Kampaengphet 2 Rd, Bangkok Tel: 0-2936-2852-66 ext.605 0-2936-0657
Take a bus to the Northeast provinces Thailand's
First Photo: Buses in Siam, the centre of Bangkok
Second photo: Mo Chit Bus Station
Third photo: Mo Chit Bus Station
Forth photo: You can smoke here
Fifth Photo: Mo Chit Bus Station
well are you going straight to Pattaya after touching down at the airport? or are you going to move around Bangkok 1st then only to pattaya?
If u are going straight to Pattaya after touch down at the new airport I recommend you to take the BELL travel bus at ground floor (200baht each), takes you straight to your hotel (mini van from Pattaya bus station) cheap, comfortable and if you wanna go back to Bangkok, they provide that too, just call them, however they don't do Bangkok to Pattaya, which I wonder why?
A lady/man from Bell can be found near/ next to door 7 on the ground floor of the Bangkok's Suvarnabhumi airport.
Bell airport representative: +66-89 44 98 843
Bell Pattaya Office: +66-38 37 00 55
Bell Bangkok Office: +66-27 47 46 73
Airport -> Pattaya: 8.00 / 10.00 / 12.00 / 14.00 / 16.00 / 18.00
Pattaya -> Airport: 6.00 / 9.00/ 11.00/ 13.00/ 15.00/ 17.00/ 19.00
Pattaya -> Downtown Bangkok: 9.00/ 13.00/ 17.00
Airport - Pattaya : 200 baht
Pattaya -> Downtown Bangkok: 350 baht
Fares incl. drop off at hotel in Pattaya. The bus wil take you the bus terminal in Pattaya and the a minivan will take you to yout hotel. If you go from Pattaya to Airport/ Bangkok then minivan will pick you up, take you to terminal and then bus to Airport.
Buses are very good, have reclining seats, toilet...
For some reason, the southern bus station is found way out in the west of the city, which isn't good to get to from the city centre. Buses depart from here to all the southern provinces and main tourist destinations such as Krabi, Phuket, Surat Thani, Ko Samui, Ko Phangan, Hat Yai etc as well as to western centres such as Nakhon Pathom and Kanchanaburi. The bus station is large and modern and not chaotic at all. Simply walk through the main entrance and go up to the top floor where you'll find lots of ticket counters. An assistant will probably come over to help you out like they did for me and point you to the right counter. The new terminal is a fairly pleasant airport-like structure with air-conditioning, electronic departure monitors (in English), a few bank offices and a KFC plus other snack stalls.
Phutthamonthon Soi 1 in Bang Ramat, Taling Chan, northern Thonburi.
Not sure of the directions but if you go by taxi tell the driver, " sai tai mai." That is the southern bus terminal. Once you are in Bangkok you may also want to check at your hotel or concierge may know. Many of the VIP buses often depart from hotels. Also consider taking van. Many vans depart Bangkok for Hua Hin from hotels as well, they are just as fast, usually a bit faster but may cost a little bit more.
Bus from Bangkok to Nonthanburi:
Number/Line 69 (Victory Monument – Sanambin Nam)
Number 104 (Victory Monument – Pak Kret)
Number 24 (Victory Monument-Prachaniwej 3)
Number 63 (Victory Monument-Nonthaburi)
Number 66 (Southern Bus Terminal-Prachaniwej)
Number 30 (Southern Bus Terminal -Nonthaburi)
Number 70 (Sanam Luang-Prachaniwej)
Number 203 (Sanam Luang-Nonthaburi)
Number 33 (Sanam Luang-Pathum Thani)
Number 64 (Sanam Luang-Samsen-Nonthaburi Road)
Number 90 (Yan Sinkha Phahonyothin-Bang Phun Pier)
Number 134 (Yan Sinkha Phahonyothin-Amphoe Bang Bua Thong)
Number 114 (Lam Luk Ka intersection-Nonthaburi)
Number 117 (Huai Khwang-Wat Khema)
Number 127 (Krungthon Bridge Amphoe Bang Bua Thong)
Number 128 (Krungthon Bridge-Bang Yai)
Number 32 (Wat Pho-Pak Kret)
Number 51 (Bang Pho Pier-Pak Kret)
Number 52 (Bang Sue railway station-Pak Kret)
Number 65 (Tha Tien – Wat Pak Nam)
Number 97 (Monk Hospital-Nonthaburi)
Sai Tai Mai is now located at Taling Chen District (where the floating market is held) Not as huge as Morchit terminal but by far a lot better facilities then Ekkamai and Morchit Terminals.
From khao san in 30 minutes or less or even Sukhumvit road in little more then 1 hour, you can reach there by taking public bus # 511 South Bound. Fare TB16
Buses to all southern destinations like Had Yi, Krabi, Phuket leave from Sai Tai Mai, its modern bus terminal with airport like facilities very bright and spacious, 4 7/11 stores, food court, shopping arcade, bus departure information screen and very help full staff.
All Transport Companies operated from there are reliable and generally on time arrival/departure as scheduled.
For coming back from there you have to cross the road and take the Bus # 508 for Khaosan Road or Victory Monument.